Honest question. Is it possible to install an earlier version of macOS on these machines? Liquid glass looks so.. unprofessional to my eyes. And I hear it's also unstable.
I have a base M5 since last year. You cannot, no. It is literally impossible. Do with that what you will.
You barely see any liquid glass on Tahoe. I keep my dock hidden and it's just the icons mostly which aren't that different than before.
accessibility settings can turn off some (but not all) of the garish animations, transparencies, etc.
It does look terrible, but I haven't found it to be unstable, personally
Yes. This page has several ways to get older macOS versions: https://support.apple.com/en-us/102662, but the earliest macOS version you can use on Apple Silicon is macOS 11.
If you move your home directory to a different disk partition, you can even share it between two different macOS versions!
That's a big part of what's keeping me from upgrading. Every time I look at my wife's iPhone I'm dumbfounded by just how bad the liquid glass looks.
It's the first time I've ever been so repulsed by a design that I actively avoid it just... out of sheer preference.