They’re all going to make you repost them somewhere else anyways. Once you break into AcitivityPub posting it’s very good, just pretty hard to dodge the whole Ukraine net, so it’s not bad itself. But that’s not even what I’m saying, you can always post from Writefreely or Lemmy back to Reddit or Twitter or whatever and it ensures your real post won’t be deleted. You keep control of part of your data on something self hosted or friend hosted on a cloud service.

I found Substack’s editor impossible to paste into BTW and had other technical issues. But Medium and Substack do kiiind of offer some social media opportunities themselves. But they mostly promote dumb crap and Taibbi respectively