They are made to fail fast, it's obviously by design. One simple thing I do in all my led light bulbs, that makes them last for an almost indefinite amount of time: remove the plastic bulb. One of the main reasons for one of the leds or one of the capacitors to fail, is the high temperatures reached during the operation of the device. Removing the bulb makes it a lot cooler, and in the last few years since I've been removing the bulbs, no led light has failed in my house. There's other things you can do, but this is the main one any consumer can do to fight back against this scourge of modern capitalism. I recommend Big Clive's Youtube channel for getting more tips like this one.
When I first embarked on this quest to make my led bulbs stop failing, I saw a video of a russian guy that, beyond removing the bul itself, drilled roles on the base of the device, and plugged screws on them to create passive cooling. Not very safe, since the screws have access to the inside of the fixture, and can eventually touch the wires and become live, I wouldn't personally do it myself.
As for drilling holes on the bulb itself, I'm pretty sure it would not reduce the temperature as much as simply removing it, and in my experience, the luminosity is even better without those cheap plastic bulbs anyway.
