This never-ending whining about oooh but my data ... for a service that you can use for free is nauseating.

This is a for-profit company running this service. It ain't free to operate.

If you don't like that, go elsewhere.

If there is one thing that has been a resounding success on the internet it is this: free services that you pay for with your clicks. Just look at the plethora of free services you get.

In no other economy would that be even remotely possible.

I do advocate for using other networks (specifically Nostr) that are not designed like this, but the network effect is big and most of my friends are on Blue Sky because they have been lured into a false sense of “it’s decentralised, I can just move! If something bad happens”.