This is the first I've heard of them, and after looking them up, I find they're all cryptocurrency/blockchain projects. This makes me think the likelihood of them being misguided designs (at best) or outright scams (at worst) is pretty high.
Also, at least one of them carries a high volume of far-right politics, according to articles cited in Wikipedia.
No thanks.
If one of them were to eventually evolve into something appealing, I expect we would see substantive discussion about it in the various privacy and software development circles that follow such things. For now, I choose none of them.
As do I.. I was meaning in addition to Lemmy. I was under the impression that the above mentioned sites are more of a "Facebook alternative" with a bigger lean towards photos of your resent holiday and that Lemmy is more of a Reddit alternative/done right.
I'm new to all this, so please feel free to correct me 🙃.
I'm changing all my services to decentralized / FOSS etc. a lot to learn.