They still sound great. In fact, I think Disable Planets sound better than they did then. I love those groups' first couple of albums. The Low End Theory had a significant impact on my own jazz listening habits (I was around 14 at the time I discovered that album). Those were innovative hip hop acts. I'm not sure Guru holds up quite as well, but, hey.
It's more the stuff from the jazz side that got my goat in the 90s and early 00s. It was a good period for young fogey music faking being up to date.
It was also a good period for other musics too, as discussed above. Depending on the type of jazz or improvised music you like, it might even have been a "great" period.
But I remember the sad hip hop cross over attempts getting quite a lot of the more "mainstream" jazz press attention. Particularly in the UK.
I find the contrast pretty stark when compared to the current set of jazz musicians like Makaya McCraven and Shabaka Hutchings, who I think have staked out a much more convincing claim.