Multiple sites posting the artwork say that nobody wants Avatar sequels mainly because it hasn't had so much influence in pop-culture or culture any which way. While there is truth to that, I think people will flock out to see it. Definitely the first sequel. Maybe Cameron has done it again and he wows us on a story level too like with Aliens and T2.
It's still some two years away and I think any sort of marketing will likely begin at the end of this year if not early next year.
Cameron was asked about it by every other major publication for like 6 months lol
I do think we live in an unfortunately reactionary "hot take" culture, but these types of reactions weren't born on twitter in the last few years. Twitter, like all of the internet, is good or bad depending how you use it. Film Twitter is no exception. There have always been outlets with good or bad takes.