Python has remained in the top 5 (often near or at the top) most used programming languages for years. Meaningful whitespace is not stopping people from using it in enough numbers to make it clear that it's a detriment as a language feature.

But it's important to note, at you need editor support for rendindenting blocks easily and correctly.

I'm... not a super fan of rhombus' emphasis on metaprogramming beyond supporting the language itself though.