I will say I’ve never ever even once had an issue with my M1 pro 16",

Same for my M1 Pro 14", the only issue I have is that the macOS version of Firefox just absolutely obliterates my battery, I mostly use Safari now, because it's much better optimized. That's really quite unfortunate, but it's not Apple's fault, and I don't see any hope for this, unless Mozilla decides to continue development of the Rust-based Servo browser engine, and eventually Firefox may switch away from the antiquated and incredibly inefficient Gecko code.