I don’t think “creatives” are more active than anyone else. For the number of users, the threadiverse has a higher ratio of activity I think and it’s generally more positive here than places like reddit. Maybe it’s a similar thing. The demographic that are likely to move, are just making similar content and that makes it look more active.
How about freaking No!
Lemmy might be written by communists, but nothing stops you using it on an instance that is not.
Also, there’s other threadiverse apps out there that work fine with the federated network if you really don’t want to use one created by “communists”
I don’t think making this place a total echo chamber, by telling people to “go back to reddit” is in any way a good thing.