Most of them I have seen either stop picking up or latch active and get red hot, lens plastic gets brittle with age too.
It's just too open ended to answer, everyone chooses and avoids kit based on there past experience with it. We won't all get the same experience.
Another example, many rate Risco I-wise sensors I don't, have seen too many daft false alarm issues in the past to trust fitting them.
There is a similar story behind every piece of kit, it's chosen because of reliability and fitting in with how you work.
A one off purchase isn't going to matter, if it works that time.