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.
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.
I have a base M5 since last year. You cannot, no. It is literally impossible. Do with that what you will.
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.
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!