The disingenuous take is that somehow (e.g. common carrier, “public square,” other inscrutable nonsense) you have the right to publish things on someone else’s

The disingenuous take is that somehow (e.g. common carrier, “public square,” other inscrutable nonsense) you have the right to publish things on someone else’s website. where does this idea — that just because some people are allowed to post some things, you must be allowed to post anything — come from? Is this an equity argument? Is it an anti capitalism argument? An attack on property rights? Mere bellyaching? Aside from the false assumption that the platforms — and not the infrastructure — are common carriers, I can’t figure out why this became a thing.