Sexual assaults (within the west) are not near as common as they were in earlier centuries. Not even if you throw in the nastiness during the second World War.
There is no need for the commonly used language to retain terms for differentiating all the different types of sexual assault. It doesn’t comepup that often outside of the courtroom.
Still, the use of such terms is a backhanded acquiescence to the Lavender Mafia.
The language is being muddied simply for political reasons.