Surprisingly I don't have that issue on my other two Macbooks. Also WiFi goes randomly down without any notification and so does USB charging. M3 Max for $8000. One would expect something less messy for that price.

Are you running the apple silicon vs code? The performance difference (and battery life I imagine) is night and day. I had similar issues with an m2 and getting a m3 max has fixed them all, so might just be a hardware problem.

What model are the other MacBooks? Possibly it's something not optimised or even not compiled for arm.

Wifi can be a very mixed bag, the usb-c charging issue sounds like something worth taking/sending it back for (assuming it's not something obvious like a crappy usb charging brick).

Other MacBooks are Intel and never drop WiFi. USB-C charger is the original 140W Apple one. If I send it back, I'll get a refurb mobo with another set of issues as returned by somebody else and not a new one, and all my data wiped out. I pay yearly AC+. I still hope some future OS release will fix it but I am not so sure.

If you're not willing to take it in to have what sounds like a hardware fault fixed under the warranty you're paying for and not using, I'm not really sure what you want, except something to complain about.

Warranties exist for a reason, if you choose not to make use of it, that's on you, not the manufacturer.

From my past experience Apple replaces the faulty board with another (previously) faulty board they attempted to repair and which passed their initial stress test, only giving up ghost within 2 years. Happened to me twice before. If I had a guarantee they put in a new board, that would be different.