I new there was another one I forgot.
I like that #postnews is quite similar to instances with names like #poast on Fedi which are pretty much all toxic and terrible shitposting instances.
"Post" is a terrible completely un-googleable name. Can you imaging searching for "social media, post" and getting anything sane?
They are owned by billionaries who intend to sell your eyeballs, and maybe share that with their top-posters as far as I can tell.
They are unlikely to federate, and seem to desire to lock you in so they can farm you like all the other people-farmers on the internet.