It probably goes against the philosophy or whatever of FOSS or Lemmy itself, but why not be a little evil so that you can actually sustain yourself? Donations can bring us far, but small non-intrusive ads can be a bliss in the skies for the people actually hosting the instance. Especially if there are millions of users uploading thousands of images and videos. This is extremely expensive.
Is running ads really that taboo?
EDIT: some people seem not to get the point of βmillions of usersβ, which presumably includes non-techies that do not use adblockers. I mean that without ads (or mining?), no instance would be able to scale to the point where it can compete with Reddit for example. If you were to want that.
Personally as a uswe I think running ads is not a bad idea, just if I would pay already (through donations for example), I prefer to have the option to show no ads.
I can imagine the current server owners either be decently supported by donations and/or see hosting a lemmy server currently more as a hobby.