Question about some of the newer bands

What I've noticed a lot in a lot of Metal styles like Thrash and the "NWOTHM" scene is this emphasis or even reliance on older music for inspiration, sometimes to the detriment of the artists. What I've noticed a with some newer Black Metal bands as well is their use of the term "old-school black metal" to describe their sound. Its not popped up as often as I've seen in other strains of Metal but I'm curious what the thoughts were on them taking such heavy inspiration early BM music. I haven't seen the undercurrent of nostalgia I see in other sub-genres and these bands don't seem to be over reliant on first wave black metal or anything, so I wanted to know what everyone's thoughts were on this?

In my own experience only one band that used that term as a descriptor for their music drew "heavy hellhammer influence" so to speak, so I think its harmless as long as long as people enjoy their music and as long as they can write a decent riff.