Yes, I know, but I don't think the chip is the reason for the cracking. I think it may be tolerances in the case.
Maybe they also started using a different, more brittle glass, with this generation. Maybe the stress has always been there, but didn't cause cracks, with the last type of glass.
You missed the point. Nobody’s saying chip is the culprit—“M1” in this context refers to the Macbook series powered by the eponymous chip. Which means those Macbooks are only a few years old at most, yet there are 49 pages of user reports that their screens are prone to cracking for no reason.
Maybe they also started using a different, more brittle glass, with this generation. Maybe the stress has always been there, but didn't cause cracks, with the last type of glass.