While I don't see Tatum as a "revenge" guy whose going to turn it up another notch next year (though that would be nice), a small part of me worries about the opposite, that Tatum might get into his own head (and the shooting woes don't help either).
I'm pretty sure there was a Tatum meme about how he performs better after the All-Star break, a quick look shows:
'19 - not selected as All-Star, post All-Star break got worse: 16.5 ppg to 13.7, 55.7 TS% to 51.7%
'20 - selected as All-Star, post All-Star break got better: 22.4 ppg to 26.6, 55.4% TS% to 60.6%
'21 - selected as All-Star, post All-Star break got better: 24.9 ppg to 27.8, 54.7 TS% to 60.4%
'22 - selected as All-Star, post All-Star break got better: 25.7 ppg to 30.4, 55.3% TS% to 64.6%
In '22 he made 1st Team All-NBA, made the Finals, won ECFVP, and after that we haven't seen the pre/post All-Star game differences anymore.
Now let me put my amateur psychologist hat on. Despite being one of the best basketball players in the world, Tatum was still a little unsure of himself. Making the All-Star game is that in-season barometer for him that helps assure him that he's the man. Making it gave him the confidence and helped him flourish. Then after 1st Team All-NBA and Finals trip, he was no longer insecure about if he was an star or not and he played better all year because of it.
So despite being a perennial All-Star and All-NBA 1st teamer, and despite winning a championship at 26, my worry is not winning ECFMVP or FMVP and then not playing in the Olympics (along with the shooting woes), will cause Tatum to start becoming unsure of his status again and this will negatively affect his play (will still be All-Star level, just not 1st team lock level).