Bob's stanning peaked with Black Panther because that was the last great hope for a woke super hero. Captain Marvel, just like Fembusters, Robin Hood, and every other woke film looked bad from the first trailer.
I think in general the public tired of capeshit after the last Avengers movie. I know that every critic has been talking about super hero fatigue since Antman, but before it felt like being out of the loop if you didn't see them in the first 2 weeks, now the people I know mostly see them when they appear on Netflix or DVD and their opinions have been "It's okay, nothing special.". Not even Bob can pretend to be hyped for the next super hero film, no matter how much he'd like to.