I agree with
@JohnW2 but have seem conflicting reports with some saying LED failure very rare, as I have found, and others saying very common.
As to:-
Quality of LED
Voltage of supply
Spike on supply
Non of the above
It is hard to say, my RCD at last house would have bouts of tripping for no good reason, with maybe two or three years between the bouts of tripping, after going over to LED my RCD did not trip, but after son moved in he got a bout of tripping which seemed to coincide with LED failures.
I have always blamed the RCD tripping on spikes on the supply, seems likely same spikes could take out LED's, but also spikes could be caused by RCD tripping.
One thing which is suspect is the one LED I did loose in old house was an expensive tube to replace the fluorescent in the kitchen, and it is the same area where my son has lost GU10 LED's, so does seem to point to a poor quality light switch.
However he blames cheap tool station GU10's. I have never bought GU10's from tool station, simply there is not one around where I live, I have used 4 outlets for bulbs, Lidi, B&M Bargains, HomeBargains, and link a local whole sale outlet, and always bought cheap. Except for the LED tubes which came from
Screwfix (one failed), and some G9 bulbs from internet. And two colour changing GU10's one of which has failed from internet.
I have found LED bulbs a problem, but the problem has been flashing when off and shimmer when on, flashing stopped by adding load capacitor
shimmer stopped by changing to a larger bulb
but the large bulb is not strictly legal to sell in the UK, as no wattage marked, or lumen marked, but cured the problem, however I have a draw full of bulbs, where I have either kept spares in days of tungsten, or swapped due to flashing or shimmer.
I am loathed to dump them, many still in their boxes, but suppose I must.