Bullshit. Threads’ algorithm will severely deprioritize external posts. It already heavily favors sponsored instagram accounts as is. You’re not being smart by putting porn on Threads through a Mastodon instance. Their AI will take whatever you have that’s tame and refuse to show what’s dirty. And if you do too much dirty, well, being shadowbanned on Instagram is a fucking super common story as is.
All this idea achieves is doing content charity for Facebook of all things. Defederate. It’s the only correct move.