Wow man I'm really feeling that. I also have a great 16" and I'm experiencing similar issues with it.
The new M1 MacBook Air is already as fast as my machine and costs less than half. It's bonkers.
I use two external monitors however and the Air doesn't support that, so that's one thing keeping me away from the new M1.
I imagine the new 16" MacBook Pros will support more than one external monitor, and I don't think I'd be able to stop myself from getting one.