I was curious about CatchyOS, but I understand it's really intended for the latest and greatest hardware. One of the few distros that not friendly to older tech. I only have an older machine to test:

B450 Aorus M

Ryzen 7 5700

GTX 1660 Ti

32GB DD4

Would it be worth testing Catchy on this machine, or is my hardware too old to play?

I once tried running Cachy on a first-gen i7 from 2009. It seemed to run fine, though obviously couldn't take advantage of the newer instruction sets.

Best bet is to try running from a live USB. If it boots, you'll be able to check its compatibility with all your components.

No lol wtf

anything core 2 duo/quad or newer will work fine, you only need newer processors if you'd like to make use of the optimized packages..

OK, I got the idea Catchy was unfriendly to older tech from this article.

Maybe I misunderstood or the info is out of date. I got cold feet when the provided terminal command returned "Not Supported" for my CPU . Perhaps I didn't run that correctly.

grep -o 'x86-64-v3' /proc/cpuinfo && echo "Supported" || echo "Not Supported"

And yea, I already installed it in a VM and it worked well as soon as I gave it more than the default 2GB RAM. I know that should really have answered my question, but like I said.. cold feet.

With Linux you'll run into more of "the drivers for this old hardware are shit" moreso than it won't work. But what you have isn't even remotely old. You'll be fine. CachyOS should work just fine.