What martial art is my dad on about?

Okay so im 14 and i ask my dad alot of the time what martial art shall i do and then he says taekwondo. he said its very practical and the best martial art for kicking :L then i said its rubbish i know 2 boys who've done it and they;'re useless in a real fight. then he showed me some awesome kicks like some bruce lee side kick and he said no taekwondo is very good. and when i tell him about kickboxing he says its nothing compared to taekwondo? btw he lived in hong kong when he was younger and he said he learned it for 8 years. then we went to a taekwondo school and he saw the people there doing some taekwondo kata and some kicks and he said this isn't taekwondo this is garbage. and i said i know but what martial art are you on about then? and he said taekwondo :L then we watched another taekwondo school again he said it was a mcdojo for taekwondo and i said no this is a real cl and he said its a rubbish one then. thing is he always go's on about him and some friends signing up to some taekwondo school. i've seen him show me some moves and he literaly could kill me with a kick. so is he actually on about taekwondo? or could it be taekwondo has evolved over 40 years? or is he on about another martial art? :l thanks :)