How long do records last?

I don't have a personal experience with this, and I treat all my records with LAST record preservative. I would guess, they should become noisier if vinyl is of poor quality or deteriorated for some reason even if you clean them again from time to time.

It doesn't matter what cartridge you use because every different stylus profile contacts a different part of the groove so the wear pattern left by one stylus may obviate what is contacted by another and even then, the vinyl must encounter some serious abuse to become "worn out".  In other words, records can last for decades or maybe forever and the surfaces remain quiet with like new fidelity.  Anyone who routinely shops used records looking for those out-of-print classic titles to add to their collections can attest to this.

Indeed. Like using crap vinyl and low-quality assurance. I've records from the 50s in way better condition than some brand-new vinyl. 

the vinyl must encounter some serious abuse to become "worn out"

@noromance love your room and all your stuff!  You're an old salt, value you're vigilance.

I have LPs that were pressed in the early 1950s that still play fine. Any that I have that are that old I bought used. I think the conclusion of the video is spot on- that dust is really the big wear issue.