probably because there is a 3.5, 3.6, 3.7, and 3.8 modification section.
I do find it annoying but have also found it useful in searches but that being said if a mod works in 3.8 and a coder hasnt realeased a new 3.8 section modification, but instead just updated his eg 3.5 mod saying it also works in 3.6,7,8, that wouldnt show up in searches
I supppose its swings and roundabouts