i honestly think that people did and still do (myself included i am sure) break it into inappropriately large segments and then embrace or dismiss a lot of music on that basis.
And, yet, this is perhaps an inevitability. 4x4 dance music is such a huge swarming (foreboding even) mass of sub-genres, labels and 'faceless' producers (the relatively common practice of using their full names rather than an alias can make it difficult, at face value, to remember who's who) that its incredibly difficult to get a foothold on the various scenes. The amount of effort required to keep up with whats coming out and whats going on within the various 4x4 scenes would be staggering.
Surely, its incredibly difficult to do anything other than generalise about huge swathes of 4x4. I'm sure if you looked hard enough you could plenty of good tracks within the happy hardcore or scouse house scenes, for example (ie. 4x4 sub-genres very widely completely written off). But most people don't have the time to look into it closely.
Its great that people are discovering some good stuff within the funky house scene but this has only come about because a load of grime heads have jumped on to the sound and started mutating it and, perhaps more importantly, UKG stalwarts like Geeneus, Kode9 and, to a lesser extent, Marcus Nasty have helped promote it.
(Allow the muddledness. I don't normally write long forum posts)