@fleaz I think 'USB 4 2.0' is worse than that. At least the 'x2' part actually describes the operation of the interface and conveys that devices not supporting that protocol would still operate at 10Gbps (assuming USB 3 Gen 2 is understood as 10Gbps).
In fact this protocol is the one big wrench in the gears of my 'just name then by bandwidth' strategy as my hypothetical 'USB 20Gbps' actually operate in 'USB 10Gbps' mode for most 'USB 40Gbps' implementations like Thunderbolt 3/4 controllers.