I’m not sure what to learn exactly

That you should keep backups :P

they’re not only arguing it, they’re doing successfully so

Die respektieren auch das Do-Not-Track des Browsers und werten das als “alle Cookies ablehnen”, ohne dass man sich durch deren Cookiebanner klicken muss. Großer Bonus finde ich

There are some that do. Inoreader as host and Reeder as client both support that. Not perfect, but working well enough

Yep, that’s the whole point of Nebula

Not yet, because it hasn’t officially released yet. Will happen soon(ish) though I think. Some mastodon clients work with pixelfed as well, although not perfectly.