[jmau111]

Users have reported various performance issues. It does not make 11 worse than 10. It's more secure to keep windows 10 if your hardware is too old.

[jmmv]

I'm asking about security, not performance or anything else. How does 11 make old hardware less secure than 10, assuming it's only new features that cannot work?

[jmau111]

Performance is important, as you don't want to have a dysfunctional system, but, typically, you have to disable important security mechanisms to force the install.

You lose on both sides.