QEMU is vastly superior. Supports a great amount of different architectures and KVM acceleration is painless. Plus it’s not from Oracle.

It doesn’t help that they keep deprecating and changing standard stuff every other version. It’s like they can’t make up their mind and everything may be subject to change. Updating to the most recent release can suddenly cause 10s or 100s of compiler warnings/errors and things may no longer behave the same. Then you look up the new documentation and realize that you have to refactor a large part of the codebase because the “new way” is for whatever reason vastly different.

Or the buggy Bloom effect in Cities Skylines, Stellaris and Surviving Mars that would cause flicker and a weird black screen. Pretty sure they never bothered to fix that.