Wiring for AP, choosing the correct network cable

Perhaps it feels like it, but in fact even "only" 10 GBit should still be sufficient for a while. ;)

Neither Cat5(e) nor Cat.6 have met the current standard for what feels like 20 years ;)

Haha, just read that properly now. I can fully agree with the statement. Cheers to the double negation! :p

One should also distinguish here between the in-house wiring and the cables on the device. Even a 5e can easily handle GBit over normal distances. Therefore, "standard" is relative. If you buy a device that comes with a cable, you will most likely find a 5e cable in the package nowadays. Of course, if you buy cables separately, you should get a 6a; it does not cost much more. But replacing a 5e because it does not perform well enough is unnecessary. Structured in-house wiring is a different matter.

Even a 5e can easily manage GBit over normal distances.

Even over long distances, because that is already specified by the standard. ;) The reason I suggested Cat.6 (or better) was the fact that it already supports 10 GBit/s, and that should definitely still be sufficient tomorrow (and the day after) for the average user. I would definitely not recommend Cat.5(e) anymore today if new cables are being installed, but we agree on that.

Therefore, "normal" distances. A device should normally not be wired over 100m.

As I said, I just wanted to emphasize that one should distinguish between house wiring and device wiring. Otherwise, this might cause unnecessary uncertainty.

A device should not normally be cabled over 100m.

Everything above 100 m is irrelevant with whichever of the mentioned specifications outside of that range, so that goes without saying. Fairly, it can be mentioned that Cat.6 can manage 10 GBit/s only up to a maximum cable length of 55 m, but even those are rather rare in large single-family houses.