The vast majority of my computer use has been on MacOS for the last 15+ years, since a Macbook Pro is the standard issue dev environment at every company I have worked at. I had a Windows desktop entirely for gaming that I've repurposed to be a Linux dev box. I genuinely thought all of the hype about Linux desktop that I have seen lately was an indication that it was finally ready for general use.
Now that I am vigilant watching RAM I haven't had the freezes. And I refuse to let the OS roll the dice on what program it wants to kill in its last ditch attempt to save itself from a problem it shouldn't have in the first place. And since Firefox seems to demand 800MB-1GB per tab process, it is a reliable scheme to just close heavy tabs when I see memory dip into the danger zone.
I just wish RAM wasn't so expensive right now, since I'd buy as much as I could just to avoid this pain.