Author lumped together suspension and headlight problems, we do not know the split between these two issues, but they carry vastly different consequences
In that regard I'd expect suspension issues to dominate in the category.
That's a bit of a exaggeration, plenty can go wrong with LED headlights.
A single bad solder might knock out a bank of LEDs. Bad weather stripping can let water in and short something out. You can hit a bump and knock a connection loose.
That would be quite hilarious, of course if it was not dangerous. It's hard to imagine how they would not switch off the "high beams", if it was lit enough.