While there is overlap it definitely isn’t 1:1 though. There are tons of ff non-linux users and tons of Linux non-ff users.

This isn’t to detract from what you said, just add to it.

Define “conservative”

I wouldn’t go very far, I’m surrounded by hills.

Honestly anyone with an account younger than lemmy.world I’d easily count as a reddit migrant.

Of course, federation makes it hard to figure out exactly when they first created an account anywhere, especially since lemmy.world has only existed since like June 2.

My reddit usage has dropped steadily over the past week, starting with ~50% on day 1 and now almost 90%.

There’s a few things I read on reddit, mostly related to its downfall (Apollo apps post yesterday), but otherwise it’s this or doing something entirely different.