No, got the 13 inch M1 Macbook in May and love it. Haven't run into any of the bugs others were seeing on release. It's noticeably heavier than my 2014 Macbook Air, and I'd much rather have the extra portability and plug into an external monitor when I need extra screen. Only regret is that I didn't realize the 13 inch M1 only supports 1 external display out of the box.
No because I don’t need a new machine yet, but if I did I would probably delay. I much prefer 15-16” laptops. That extra bit of screen makes it reasonable to have two apps visible at once, while 13” doesn’t for me.