I agree with this too
The teams that had the most success there have not only managed to repeat similar levels of success under normal again conditions since the bubble, but exceed that at times too (in the cases of Denver and Boston)
Also the players who broke out in the bubble (MPJr, Derrick White, Herro, Book, Murray etc) have also proven themselves to be for real too. TJ Warren is really the only true 'fluke' guy from that period.
An asterisk to simply acknowledge the different circumstances at the time is as far as I'd go when it comes to the defining the bubble when looking back, nothing close to calling it fluke though.