It's one of those things like "building an X server that isolates the graphics and events of untrusted clients from evert other client". It could be done, but people won't do it. They'll just whinge about its lack being inherent to the technology because there's more excitement in sweeping away the old tech and starting afresh than there is in building on what's there.

I can see that there’s no easy money in doing such a project, and that it’s quite a bit more than a few nights hobby project, so there are too many shits to give, but instead of whining about how technology is outdated, one can at least be frank about it.

I understand that a part of this whining is a desire to market one’s own proprietary silo which purports to solve these problems.

I think because many people would not want that. I think if some channels start this, people would flee.

This is a problem solvable with a newfangled thing called „server configuration”.