There are some very bad, cheap LEDs on the market. Sometimes even under name brands. I've learned to be pretty picky about which ones I buy, both in terms of their longevity as well as the quality of the light.
LED dies often due to insufficient heat dissipation, which could be due to the cramped design of the actual light form factor.
Yes, when I bought a few LED lights from Aliexpress (years ago), they got broken in a few months. But I have philips LED light since ~2012 and that still works without any problem.