There's truth in this. Buttman and Ben Dover were the first Gonzos I saw on VHS and possibly Shane's World a bit later. That pretty much became the benchmark; I think now most people watch amateur stuff with the exceptions of big studios: Brazzers, Evil Angel etc.
The problem for me with Ben Dover and his imitators like Neil Down is its often been the same scenario, he picks a random woman up, chats her up and takes 30-50 mins persuading her to suck his cock before bringing his mate Pascal the bonking Belgian or someone else in to fuck her. He had some good looking women but it was all too slow for my liking.
I stick to stuff like Mike Adrianos Swallowed.com oral only or his Anal.com stuff, a quick chat at the start and into the action. Or Rocco Siffredi and his hard stuff. My fave porn ever being reverse gangbang porn, brilliantly done with series like Outnumbered 1-5, Roccos Reverse Gangbangs 1-3, Mick Blues Best Day Ever 1 and 2 and Manuel Ferraras Reverse Gangbangs 1-3 among others.
Good reliable studios for me include Jules Jordan, Reality Kings, the Evil Empire stable which includes many different makers, Muschi Movie, 3rd Degree, Zero Tolerance again among others.