Of course we will all have to decide what to do with the time spent in a gym. Will the longer workouts ( hour and a half plus) morf more into becoming manual labor rather than a time of opportunity to build muscle mass and strength in a shorter, but intense, workout period. This is all in regard to pure BB'ing, where max results are to be gained from every workout. I think that is what most folks who come here want. Also want to avoid just putting in just "Gym Time" rather than getting the most benefit from serious workouts.
Olympic lifters, like PL'ers, have to be economical with workout time. Form, flexibility and exercise performance are combined with adjusting to the progressive tonnage (main goal) lifted in any training session. Strength/power, with the handling of near max weight will require much more rest between sets and exercises than BB'ing will. So that 2+ hour gage is very misleading. Comparing apples and oranges .
Getting a fast paced workout is not always linked with HIT, HIIT, IT, etc. I do not favor HIT over anything else, it is just another tool to be tried. I like Power Rack work more than anything else, with partials (3 phase at times...insure muscle balance). Preferring overhead lifts rather than flat benches or power cleans over BB rows any time. Just makes more sense to me. I even use high rep (20 reps) at times for Power Rack (squats, DL's, SLDL's, Cleans, etc) and regular Rest/Pause training. Nothing take me over a good 45-50 minutes of actually training time per session. Am not a true BB'er in any sense of the word. But do love lifting heavy. Something like power BB'ing ,which most of my training Bud's are into.
Guess the bottom line is, if a lot of guy's would up their training pace, the workouts could be more productive in the long run. That along with briefer and to the point training . The TUT thing does seem to have value for quite a few successful BB'ers. Though may not be everyone's cup of tea. Good Luck.
Side Bar: Webcke makes some good points.