"Creators" are not a single entity. There are tons of very creative people in the fediverse already.
There will be pockets of creativity all over the internet, maybe more in the centralized social media but the decentralized social media might be more attractive to creators who value and understand digital freedom.
I know that there are already on Fediverse, I'm there and I love this idea.
What I tried to say (but came out poorly), that Fediverse, even with big growth in last months, is still kinda small and most of those "creators" are still on centralized social media, so regular people are also mostly there.
it was clearly visible when Musk took over Twitter and mass migrations to Mastodon started. Some journalists and different public people moved there, so regular people also moved. But with time, some of the creators got bored and got back on Twitter, and outflow of ordinary people also was visible.
There will be pockets of creativity all over the internet, maybe more in the centralized social media but the decentralized social media might be more attractive to creators who value and understand digital freedom.