Re: Relax
"I was surprised when testing Mint (and Unbuntu) out on some old XP PCs at how much hardware just wasn't supported."
Indeed. Until I got newer hardware in 2012 I was unable to run either the Cinnamon or Mate desktops as provided by Mint on any of my existing 4 systems.
By the time that new hardware arrived, I had learned about the folly of running non-LTS versions of Ubuntu or Mint, so had moved on to other distros.