I used to get more than 5 year life by buying the more expensive Cree LED lights, but the Cree LED incandescent replacements I bought 2 years ago are now either flickering or failing completely. I suspect electrolytic capacitors are failing rather than LEDs.

I worry that the all LED fixtures I see are electrically in series “daisy chain” wired with Chinese made LEDs and may go dark if just one diode fails out of a dozen or more?
None of the exterior of box advertising I have read has contained words such as “parallel wired leds to be single failure tolerant.

Maybe buy 2 extra units - one for quick change out
and a second unit to rob individual LEDs out of to repair the other units?

Not to worry I guess - government planners thought through any potential headaches years ago.......