I would say the complete opposite is happening. It is probably harder to understand for you because you are elite at other schemes and wouldn't have the appetite to learn another scheme.
People rarely play ttrr's on non-linear maps now. I would much rather play a more challenging non non-linear map but understand the majority prefer a linear map. Whenever I host, I try to pick a map that isn't too tight with minimal obstacles and actively risk losing more.
Maps are simply becoming more linear.
I remember playing WL, cl2k and even FB games on maps like stratovarius, hermit, Krutgumman and DarkOne maps etc.
People are playing more AZ, Eminef, NAiL, Fluffy and they are way easier and more accessible than before.
Someone learning TTRR has got it easier now!
