To developers, the difference between USB 3.1 2x2 and USB 4 is material, and they need two different names.
To end users, they're identical, and different names are confusing.
Changing the labelling of USB 2.0 would be a cure worse than the disease. Approximately nobody is introducing new USB2 products, so having <1% of USB2 products use new nomenclature would only increase confusion rather than decrease it.
To developers, the difference between USB 3.1 2x2 and USB 4 is material, and they need two different names.
To end users, they're identical, and different names are confusing.
Changing the labelling of USB 2.0 would be a cure worse than the disease. Approximately nobody is introducing new USB2 products, so having <1% of USB2 products use new nomenclature would only increase confusion rather than decrease it.