Yeah, especially if they get warm which is what you want a cure box to be. I probably get less than 100 hours out of the LED strips I bought.
I don’t understand why you wouldn’t just use the nail dryer UV bulbs instead - you get 36 watts for almost half the cost of 20 watts with that light.
I made a build of @AtlasBrace 's Ikea cure chamber. Total build cost for 108 watts of UV was $125 including cabinet and shipping.