@mdd1 Some do, some don’t, but by your standard is it a problem that Litvish ba’alei batim don’t learn Navi or Moreh Nevuchim seriously? Who decided that the only acceptable Torah to learn is gemara? The yeshiva structure and schedule is exactly the same in Lubavitch as the Litvish world, other than there is no serious movement to sit and learn in kollel as a career in Lubavitch.
The stereotype that there is no serious learning or no real talmidei chachamim in lubavitch is just that, a stereotype. Plenty of R”Y and R”M are serious talmidei chachamim (I believe R’ Yoel Kahn was mentioned in this thread, but there are many many others). Many of the bochurim sit and learn torah (mostly gemara, just like you) day and well into the night.
Either way, you might not consider chassidus to be torah, but they do. Much like mussar, it makes them serve Hashem more fervently, and helps them refile their personality, so I’m not sure what the big deal is.