So far so good! Some very unscientific observations from spending an absurd amount of time scrolling local on pixelfed.social:
The people coming from Instagram and TikTok seem way less grumpy than the microbloggers. People are having a lot of fun and not complaining about much. It's kind of a trip seeing happy, joyful people on the Fediverse to be honest. Everything in the world suuuuuuuucks right now, so it's felt like a bit of a refuge. Sometimes I'll accidentally bounce over to the global feed and oh man is the change in tone jarring.
People don't seem to have a problem with servers like the Twitter migrants did. Folks are still talking about it a lot on Mastodon though. I've literally not seen a single post about Pixelfed being "too complicated" to succeed, whereas it was (and is) pretty common to see "this place is great and all, but..." posts in the microblogging neighbourhood. Not sure why this is but it might be because the people coming to Pixelfed are generally younger than Mastodon users. This is just a guess, but I'd estimate the average age of Mastodon users is maybe mid-40s. Most of the people pouring into Pixelfed appear to be in their mid-to-late-20s. Perhaps those folks are just more accustomed to servers through Discord and gaming? Though people are generally captioning photos and not writing out lists of things they're unhappy about and they could also just be unaware of servers altogether...
Pixelfed is easily the most diverse "corner" of the Fediverse now. Fedi is very white but a large number coming over now aren't. Pixelfed.social has probably gone from being 75% men to 75% women in the last few weeks. Diversity is the best possible thing for the social web.
I've seen a bunch of people on Instagram promoting Feb 1st as "Global Switch Day" so hopefully it'll keep blowing up.