It’s every single one I’ve ever encountered. I suppose you could say I’ve just encountered cheap ones - that could be true.

But I’ve never seen a single one (since the 90’s) that didn’t start failing in short order.

Some just sucked from the word go. Have one in my car that had hardly been used because there are separate controls on the steering wheel. Steering wheel ones are fine, the one on the head unit, that’s rarely used, is failing.