and you are right, they are quoting influences from the 70's way more than current.
There is a reason for that. Something very special happened starting sometime in the 60s. There was a period where some artists had a fair amount of latitude in the direction they took their creative content. There was a LOT of creativity in the industry for a period of 10 years or so before the recording companies started to impose their control again. I think that it was also driven by the profits generated in that period. When you are making buckets of money as a studio, its a lot easier to say yes to things you personally do not like, but that might make you money. It is easy to take risk.
It seems to be a natural human tendency to try to take more and more control as things get worse.
The creative talent is still out there, it just does not have the freedom or financing it did in the 60s and early 70s.