I don't really play with male sims so it is something I have never thought of before but now that I think about it, there are some animations that really don't fit a more "masculine" type sim. Sadly, I don't think anything will change about it (if they did great! I like to hope.) this late in the game.
I know making a game with so many animations can take time and if you are on a deadline, you try to find an in between where it can sort of work as an all rounder for both male and female sims. In some ways I do think there is a little bit of laziness as well, like the counters and the island counters. The islands counters are just a counter base with just a long work top, that's it. So I think it is the same thing for the animations too sadly.
Like I said I can only hope that something can/will be done but for now if we have to use mods then that is what some ppl will do.