The best use of these systems would be to combine the various procedures:

First, and foremost - don't leave garbage behind in the first place. Think twice before bring sequins and feathers in costumes (the biggest culprit in my experience from 2003-2010). Film cannisters for cigarette

Second - Every Camp does a combination of complete-grid clean up on their own "lot" - I've done that three times - and it was honestly great - plus an hour of "community time" - where you walk the play off your lot and clean it up as well. Your camp packs off 99% of the garbage, and then a grid search, plus heavy rake, finds the last 1%. About the only debate my camp ever had was whether it was acceptable to just dump their potable water onto the Playa (I thought it was fine - as long as you didn't just pour it all in one place - within 15 minutes you would be hard pressed to ever find out where it was poured out).

Third - the two-week "walk the line" where the detailed MOOP maps get created. 150 people for a 80,000 person 7+ day festival seems entirely reasonable - and it's a big part of BRC.

Finally (and I really mean do finally, it's almost a thing that shouldn't be really visible) - show up with the heavy gear to find all the submerged stakes/rebare/moop). Just rake the hell out of the Playa (absolutely fine - I've never understood people who think that it's a problem - it really isn't - you sure as hell aren't going to disrupt any ecology - except for a few random sand-fleas - it's entirely devoid of any life) - and the first bit of rain completely and 100% eliminates any trace of what you did.

From some of the videos you can find of it on Youtube, the cigarette butt claim doesn't look believable. It can definitely leave smaller debris behind, and certainly won't pull lag bolts out of the ground.

The whole point of the manual cleanup duty is the meticulous mapping of MOOP. This information is used by the community to learn and improve for next time. This has resulted in measurable improvement over the years, despite the event growing massively in size during that time.

I feel a big commercial machine that cleans the site up in a couple of hours will result in a community that does not espouse the 'leave no trace' principle. Because why would you care? A big machine is going to clean it all up anyway.