I think the issue is much more narrow than that. Not only the ideal circumstances when tracking (drummer, drum kit, room, gear) but also the engineers involved (recording, mixing and perhaps mastering). However, these comments are reserved only to metal and perhaps rock music, since sample replacement has been such a mainstay in these genres. I bet you could get an assortment of cardboard boxes, trash cans, stick them in a closet, record them on a cell phone or cassette recorder and have a viben' indie sound. I have been wondering, in the past, if people complained a lot about using an Alesis drum module in recording instead of real drums. Or to take it a step further, did people ever start complaining about using a 5150 with a boogie cab, since that has become more or less a standard. Unlike many other genres of music, I find that metal production tends to be centered around achieving a certain archetype. Now that the technology is cheap and accessible, combined with social media, this homogenization of productions using the same tools is just much more apparent. I also wonder, if some where there is an Ultimate Hip Hop forum, where people are angry at the state of auto-tuning, to which some reply it is necessary (talent, time constraints due to budget), others reply how they enjoy recording a real singer and others yet who are on a quest to find a way to make it sound like T-Pain, but with some other plug-in or device. This is a great point and I agree with you completely. If I hear a record of a band I like that is a SD2/Slate/AxeFX/POD production, I email them and ask why they chose to do it that way. Some of them don't have a clue, other times they want to sound like band XYZ who did the same thing.