Or the use case. LEDs are quite sensitive to heat, so use in closed or inverted fixtures will decrease their lifetime dramatically.
Well that's the problem. There are a lot of low-quality, defective LED bulbs being sold. Consumers don't have an easy way to find good ones. Just paying more or looking for a trusted brand name is no guarantee of quality.
This is true of all consumer products, not LEDs specifically. LED lighting has been mainstream long enough now that you can find plenty of information on which specific brands and models are decent.
My personal anecdote is that I have yet to have any Philips LED bulbs die on me. The oldest ones I have are from 2012.
I bought 8 Osram leds and all died within a year. I complained and got a few for free and those also died, I think even faster.
FYI, Osram is a zombie brand these days. The company was broken up and the consumer lighting brand was sold to some Chinese company that is selling some stuff branded with it.
I've had LED bulbs that lasted for well over a decade. Most seem to be pretty indestructible. But I've got one rail-mounted system using GU-5.3 leds that all seem to die pretty quickly. Not sure what's going on there.