I've never received a 1099 from itch.io, I assume they don't do that. Apple doesn't either, but if I remember correctly I do receive 1099-MISCs from Google, Amazon, Microsoft, and Valve, which I find a real convenience, not having to total all the app sales myself!
Viewing post in 2021 Taxes for small creator
A small thing that answered my question, I guess since I never had a payout last year I don't need to worry about it quite yet! Wanted to share this in case anyone stumbles across this thread with similar questions. I assume that means you won't get a 1099 until the year you actually get a payout
https://itch.io/t/769507/what-year-are-itch-payouts-counted-for