Changing stuff depends on the pre-built. You can custom order a HP Omen, choosing all the components from a select list same as a boutique build, or buy a 'stock' pre-built Omen that basically comes with the cheapest parts HP could order under contract.
Chill, it's been proven that they usually last half as long. I have intels from 30 years ago that work just fine. I'm not saying all AMDs die after a few years, they just simply have shorter lifespans. Since AMD is cheaper, you win some and you lose some.
Bunch of ehh. AMD cpus and Intel cpu's have been coming from the same source for years, Taiwan Semiconductor Manufacturing Company (TSMC). Same materials, same standards, different fabs/architecture. The Only reasons AMD has recently been cheaper than Intel is that a) Intel could afford to price high, the market could bare the costs, and b) AMD was having too much fun undercutting Intel and hogging the budget market where Intel had no mainstream presence.
That market flipped when Ryzen proved it could hang toe-to-toe with Intel performance. Who'd spend $600 for a 10700k when a $450 5800x would beat it in every catagory, even coming close to doubling performance in a few. At half the power requirements.
Got nothing to do with one cpu being built worse than the other or with lower quality or lower quality materials. If anything, the reverse would be more believable, it'd be a lot harder to get AMD's 7nm process stable on crap silicon vs all the troubles Intel is having getting 10nm to work right if it has higher grade silicon.
Nobody knows the full extent of lifespan on either cpu, cpus are not old enough yet to have seen a full human generation. There are still working Commodore Vic 20's built in 1980 around and they are neither Intel nor Amd based cpus.
Cpu lifespan is measured in 2 things. Software and Abuse. That's it. Abuse it with bad maintenance or OC, you shorten physical lifespan by an indeterminate amount. Use it long enough, software will shorten its usable lifespan, rendering it obsolete.