A lot of the backlash against Wayne was fans over-reacting to him splitting from his wife and firing the drummer. As I've said before, had that happened a couple of years later it would've been a big "Wayne Coyne tries to Make The Flaming Lips Great Again by purging the band of SJWs!" political talking point.
I saw them live on the Terror tour and they didn't do most of their famous live schtick. They had explosions of black confetti and balloons, and Wayne stood on top of a podium made of LED cables, but no stage invasions or hamster balls or anything. That was probably to suit the darker theme of the album so they may have brought some of the party stuff back since.
I'll check out the new album but it seems like the first one in a while that isn't trying anything particularly ambitious or new, and it doesn't seem like there's a lot of hype out there for it.