People have to understand that, as soon as you are in a callout, you are marked, and are labelled with a discrediting attribute that you're burdened with. This reduces and delegitimazes your voice and your ability to be trusted and interacted with, leading to being ostracized and excluded. That is the point of the callout. After being marked and labelled, those who aren't stigmatized will avoid contact with the "stigma bearer." When marked, anytime the stigma bearer is recognized, they generate a response of aversion and disgust in those who have seen the callout, which they rationalize and justify through the notion that those who receive callouts "deserved it"
This way, the stigma is seen by others as transferable by association and as a threat that's understood as a fair and legitimate reason to keep a safe distance, as to avoid becoming a stigma bearer. When those who aren't associated, and are sufficiently separated from the stigma bearer, support and defend the stigmatized, they become "infected" by association. But, those directly marked will always be affected the most, as they're exposed first and more widely. When labelled as a stigma bearer, the perception of you being unsafe is spread around as a warning, which is done under the guise of maintaining the safety and sanctity of the community
People don't even have to believe in the callout for the stigma to work. They don't even have to see the original post, if others relay the information through other means. Once the stigma is created, it stays almost permanently. When the callout has been around for long enough misinformation will also become easier to spread, as the original source is harder to track, and it becomes "common knowledge." It may even become in fuel for another callout, as "they were already called out before." This is why the callout is inherently effective. The callout is designed to be a weapon first, making sure it damages and stigmatizes the "brand" of a user. This way, their url, name, mutuals, profile picture and posts bear the stigma
This policing of "bad actors" is weaponized to get rid of those that are undesirable within the community, and callouts are used against those that are marginalized, as they usually lack the social resources to retaliate, and because they're seen as "reasonably capable" of doing what they're accused of. Those that divert from the norm are also the most likely to be in risk of suffering real life consequences when separated from their communities and support nets, and callouts are intentionally made to socially murder them and their brand. This is why these warnings are shared "just in case," so people can feel morally righteous for defending the community, as it is easier than taking tangible actions to stop actual issues
Callout post are designed and intentionally spread to socially murder others, and the more likely the targets are believed to be guilty, the more effective the callout post is. People will only jump to defend targets of callouts when they're sure they're innocent (which you can only know if you personally know who's being targeted). But nobody deserves callout posts, and if you think that people who are guilty deserve them too, you're part of the problem, and part of the reason why callouts are so effective. Callouts don't stop abusers or abuse
Evidence can be fabricated, people can lie, spread rumors, and things can be blown out of proportions, but, even if the accusations are real, ask yourself what narrative a callout is fabricating. People making callouts know that most victims of them haven't actually harmed anyone, so they instead paint them as groups that "have the potent to harm others." You're left to fill in the blanks with whatever morally repugnant thing they could've done. Just the suggestion of possible fault and wrongdoing will make most people react with aversion and disgust, and this is enough to turn a target into a stigma bearer. People will avoid them, because the feeling of rejection is strong enough to rationalize stigma bearers as abusers
When you're targeted by a callout post (and survive the social isolation), you don't learn a lesson, you don't grow, you're not allowed to change and be reintroduced to your community. It doesn't matter if you're innocent or guilty, because people don't even have to believe a callout post in order to act on the implicit call to action and harassment. If others consider you a danger you will be isolated and bullied, sometimes to the point of suicide, and the people who decided to target you will consider this a victory. Callouts aren't interested in rehabilitation and growth, they're not interested in questioning the institutions and contexts that allow for the abuse of power and real harm to be done. Callouts are a means for quickly obtaining social capital for removing "bad actors" and keeping the community "clean"