There's isn't any quantum computers close to that, because quantum computing does not yet exist lol.
They do exist. Dwave is making huge improvements in this aspect and Google is making good progress as well. It's just that they don't have sufficient qubits to be useful for cracking keys.
Not disagreeing with what you said but it's not like BTC has undergone that many forks of its own volition...ie. a fork for the health and progress of its own network driven by its community/devs. So a fork would be a pretty momentous deal for the grandaddy of cryptos.
Most of the forks that were opposed seems to be because of certain personal agendas. A fork like that should be fairly straight forward; no one would oppose something that would harm Bitcoin's security.