My Xbox one died and now I'm just left with my old consoles from the 16 bit era and an N64. Why is newer technology less reliable?

Isn't that the opposite of an improvement?
I have a SNES, a Sega Genesis and a Nintendo 64. The genesis is over 30 years old!
My Xbox one died and now I'm just left with my old consoles from the 16 bit era and an N64. Why is newer technology less reliable?
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