Front hole if anything would be the urethra, right? And both sexes have them. It's nonsense. And if it makes it into terminology in some places it will be temporary because it's ridiculous.
TRA seem to be moving rapidly into their "give 'em enough rope" phase. 14 year old girls on Tumblr will eagerly adopt any and all new terms (however much they are voting against their own interests) because they want to be on the cutting edge. However when these things are introduced to the wider public they'll wither and disappear because people only have so much patience for this stuff. I think TRAs see a point in the future where 99% of the population will be toeing the line. It will never happen.