While what you say is true and back in the day it did take longer for the extra version to be leaked, the situation is different now. Playing the 720p or 1080p wasn't such a big deal, so it didn't matter when the 1080p was leaked.
Back then, the extra version was just the different resolution and one or two additional renders. But now, at the end of 2023, nobody plays games in the 720p, the 1080p is normal. I would even say that a 4k version should be the extra. I don't even know whether there are any other games that are released in the 720p now, except Fashion Business. Can't remember any.
And what's even more important, now absolutely every sexual event has some extra stuff (seven in the Ep.4 v2 compared to one or two earlier). Basically, every single scene is cut off in the 720p version. I simply don't understand those people who pay for it and play it. My guess is that no patron actually plays it. They just support the developer by paying him 10 dollars, since it is a reasonable amount, but all play the extra version downloaded here or somewhere else.
For any fan of the game, the 720p version doesn't make any sense now. And if you are not a fan, it still doesn't make sense to pay for it - you can always wait a month or two playing other games - it is no big deal if you don't especially like the game.