In my experience and my family's you are lucky if they last 3 years. If they last 5 years there's usually a subpar experience, e.g. they overheat significantly at 2 years. OTOH, we have a few macbooks > 10 years still working.
Computing kind of stagnated since 2010 and plenty of hardware since then still works fine today and is usable enough for many tasks. Apple was nice for needing not all that many different drivers but its statnge integrations like drive fans to bios are obnoxious.
I've owned old macbooks… I got scalded by the metal screws on the bottom in the summer because apple thought looking sleek was more important than proper cooling.
Macs were designed up to the thermal specs that should have been but never came.
Hence the m1: enough is enough
My >10 yo macbooks also have bad batteries. One of them won't last one minute, and will also overheat with minor workloads. They were not immune to overheating when new, but unreasonable overhearing (for the time) definitely didn't become an issue at within 3 years of purchase.
And that's with Intel macbooks. My M1 from Dec 2020 works like new (I'm sure the battery life has shortened, but not in a way that I notice). It overheated a couple times running LLMs—that's it. That's how I know the fans work.