Yo, everyone has their opinion, i can go on a dissertation and say that whatever Pokemon sucks, no problem with that, except that there is absolutely no point to prove. So people who think they have the right to judge everything, take a cup of tea or coffee, catch your breath and come back later...
Now on topic itself; the first time i played Gen III, and met an Absol at like 1st encounter, i was like "oh, this one looks good, probably a Dark type, imma catch it!", then *Absol used Swords Dance* "wait WHAT", and my Pick Up Linoone got destroyed after a Great Ball failed... Since then i've been respecting every Dark type Pokemon haha
While Absol can be a bit slow and quite squishy, if you bring other threats you can just mindblow your opponents who are afraid of Sucker Punch. Not to mention Baton Pass...