TLDR: While Fediverse won’t directly serve you ads, anonymous bad actors other than Meta can save, redistribute, and even dox you for any information you post here. Anything you post here can/will remain forever on some malicious instance that doesn’t honor deletion requests. So be careful!
Yes, but there is a reasonable assumption that your pictures will only be viewed by your followers on Instagram. I can’t see myself switching to PixelFed. I’ve completely switched from Reddit and Twitter to Mastodon, Lemmy, as I don’t tend to share my personal information there anyways.
It’s not reasonable, as it’s both public and said followers can just re-up the content elsewhere out of your control. Look at any popular account on any platform, and see how often it gets copied/reuploaded elsewhere
It is reasonable because I can have a trust basis with my followers who are my friends/family. If a malicious instance host can just use a plugin to view follower only post, that’s not going to be expected by an average user. That’s why I posted in YSK.