No I completely agree with most of that, the newer stuff is by and large "better" but it is considerably less "interesting". RMC's are all great but they're all kind of the same. It's not a bad thing by any means, it's great to have a smooth, intense, dynamic, (mostly) reliable coaster at every park in America, but when everyone has one none of them feel like a as much of a unique destination I guess.
I will say there is still some newer "weird" out there and I always appreciate that. Cannibal at Lagoon, the wooden shuttle coaster in Texas, the new Tilt coaster coming to Austin although there may be a dozen of those across the globe 10 years from now. Guardians at Epcot is pretty unique but certainly on a different scale, but something like the new Uncharted ride in Spain or even the Darkastle conversion at BGW are pretty interesting projects.
As far as Mindbender, I never got to ride it but it was definitely a "bucketlist" type coaster for me. I will say I never really understood the appeal of Schwarzkopf's, been on several, they're all fine and good but nothing that was ever close to a Top 10 or 20 ride for me. It is sad to them permanently removed, but if Indiana Beach successfully reopens Quimera then hey that'll be some old school new weirdness in the coaster world.