Sometimes it's easy to forget just how kind Anakin could be, how boyishly charming he could be!
With another character, this could come off as annoyingly hypocritical, about how he knows he doesn't practice his forms as often as he should (and it shouldn't matter that he's naturally talented enough not to need to, it's about the internal discipline of it all), but he's so adorable about it that instead it's something those who love him wind up smiling at him over.
His natural charisma comes through even when he's admitting that he doesn't do the things he's supposed to, he's so easy to love in these moments, he made twenty of these holos for Ahsoka, he trained her through them and emphasized that he believed in her, and wryly admitted that he didn't do as he was preaching to her, even though it's important.
It's so easy to see why Ahsoka loved him, it's so easy to see why she held onto his memory, it's so easy to see why Padme and Obi-Wan and the Jedi loved him, why he never really got in trouble for the things he did when he broke the rules.
We all know he's also Darth Vader, but Darth Vader is also Anakin Skywalker, you can't have the nightmare murderer without the boyish charm, and Hayden bringing that energy to the character, that we can see both in his portrayal, more charming boy here than nightmare, but it's not hard to put it together with the previous episode's Force vision of him as Vader, because this is who Anakin Skywalker is, too.
This is why he was so loved, why he was so easy to love, he's just plain ridiculously adorable here!!!