25y life expectancy is a lie. I've seen it with my own panels which were installed by the former owner. Nobody checks if these things are still working correct

25y life expectancy is a lie. I've seen it with my own panels which were installed by the former owner. Nobody checks if these things are still working correctly. In my case after just 4y every panel was subpar And 2 of 12 were simply so bad that the bypasses kicked in. In turn that caused the input voltage to be too low when it was hot and the internal resistance went up, which results in a shutdown inverter. Really, how often does this happen without people realizing? I've checked with a neighbour, he never looked at it, guess what, same deal!?