100% diddo here.......
at the end of the day a lot of the terms are just adjectives which help describe the sounds that you are looking for/talking about......
and there are lots of tunes which get put into different genres which tbh is great too.... e.g some tunes off ddr's Hazchem label, in one shop ye might find it under techno, another acid techno, another hard house, another in trance....
but music like this has crossover appeal so if some trance head comes accross the hazchem tune and seeks out more on this label or by those artists then that can open up a whole new scene to them...
and 'back in the day' when i used to physically walk into the old record shops i used to trudge through all the other 'genres' or 'boxes' or 'sections' and often come across the odd gem which has been wrongly 'labelled' or 'genrified' (sp)....
which for me was good.....