I luckily haven't had to deal with much chronic pain or hand pain yet, especially with regards to baking (crochet is another story). That said, these look like some pretty solid tips! There's also some in the comments section.
As this link nears five hundred notes, I'm just... very quietly touched at how many people are sharing it. Whether they need it themselves (or think they will someday), or know someone else who might need it, the fact that all of them are sharing the sentiment of "I want the people who love doing this thing to be able to keep doing the thing that they love" is... yeah. It makes me happy.