Incompatibility is a two-sided issue, there are enough laptops out there that work perfectly fine in Linux. But a brand isn’t a technical promise, they’ll miss with some models and hit with others.

People always complain about Lenovo in these threads, I think because they are held up as the “good non-Apple laptop” brand for whatever reason. I suspect this reputation makes people assume they can just grab any random model and it will work perfectly. That’s just a roll of the dice, maybe weighted in favor of working, but still random.