Telemetry is in Server -> General -> Allow Anonymous Usage Collection. When you opt-out, it also send a final message to the server that you’ve opted out. The the telemetry itself looks reasonable, I don’t mind sending it. It’s really just the dark pattern of opt-out vs of opt-in that bothers me.
The donate button is the heart in the bottom left menu (not visible in the settings). It’s unobtrusive. I wouldn’t bother to remove it, except the tooltip says that I have to pay to remove it - now it has to go. Asking for donations is fine, but asking for money to remove a button is disgusting.


As a pretty new user to PieFed (and Lemmy), I still find those combined feeds (“Communities”) confusing. It helped with discovery, but feels like I have been mass-subscribed and now need to unsubscribe each community individually. (I’m sure this is not the case and I just haven’t figured out how it works yet.)
In contrast, the cross-post feature (mentioned by sibling comments) was easy to understand, and looks like a great way to discover (and loosely connect) small related communities.