I think it's perfectly named, all very logical and practical, as a protocol, and its naming, should be.
Power Delivery, On-The-Go, and Thunderbolt are additional features / protocols that USB can support.** A shame they made it so flexible?
The "gen" thing and other such inconsistencies are down to manufacturers and their marketing overlords. In the spec, it's just numbers, 1.0, 1.1, 2.0, 3.0, 3.1, 3.2, and now, 4.0. It's really not that hard, is it?
*...and if there weren't newer protocol versions it would've been replaced by something entirely different in order to gain more speed, which would be even messier. USB won out over Firewire because USB was promised to get faster and faster with ever increasing protocol versions, whereas Firewire's speed was as fast as it would ever be able to be.
**If you just want something to complain about, how about the fact that auto-corrupt just tried to change "protocols" to "gents" in this sentence.