I really like pixelfed, but it replaces what instagram was a decade ago, not what instagram is now.
Pixelfed is amazing for sharing photography type photos.
Instagram is now a photo sharing, video sharing, tiktok doomscrolling, messaging service, noticeboard in one.
The WHO said COVID wasn’t airborne and only spread through contact or cough droplets until 2023 when they changed their mind even though research had put significant doubts in this by 2021.
They WHO isn’t usually the most speedy at getting the details right. I’d look for literature reviews.