Nope, the problem is that software never upgrade their ssl stack to support the newer ciphers. Especially Microsoft that's easily 10 years behind on the current

Nope, the problem is that software never upgrade their ssl stack to support the newer ciphers. Especially Microsoft that's easily 10 years behind on the current SSL version. Without the ability to support multiple versions, it would be impossible to upgrade anything at all. That would be a whole load of other problems.