Other languages are definitely less complex — you generally don’t see language lawyering for Python or Java — but I think that there are many useful features in C++14/17/20 as well. Writing only C++11 will lead to suboptimal code.
But my experience for instance when having to do stuff in C#, Java or Python is that when I'm looking for advice on the internet, stackoverflow, etc etc... 80% is reaaalllly bad, in the sense that if it were C++ everybody would be screaming "wtf don't do that this is insane" and write 12 blog posts and 40 twitter flamewars about why this is a bad idea and you should never ever do this... but apparently the "tolerance to bad code" is much higher in other communities.
But give them five years and they would generally not be able to write a C++ compiler.
You won't find that as much for for Haskell or Clojure or Brainfuck but that doesn't make them better languages or less tolerant to bad code.