Age of "var, val" is over. Now age of "significant whitespace".
If seriously, seems like indent syntax is default to go nowadays. Python has way too big influence on language designers.
I chose it mainly because I like the style and I haven't found it to be an issue in practice yet, especially with flexible rules for line continuations. The biggest detriment to me is the lack of auto-formatters for indentation.
Edit: I'll add to this a point I haven't seen discussed before about functional languages using the `f a b` syntax specifically. Without significant whitespace you cannot really have semicolon ellision with this syntax since almost any line may be interpreted as a function application of the next line. E.g. `a = b + c` and `foo 32` as subsequent lines would be interpreted as `a = b + (c foo 32)`, hence why ocaml requires semicolons. For some people semicolons are fine, but they're just noise to me :)
There's more detail on the specific significant whitespace scheme used on the website here: https://antelang.org/docs/language/#significant-whitespace
Guido van Rossum basically said parsing them is hard, and he doesn't like lambdas in the first place, so it won't happen. [0]
Similar to "tail call optimization encourages dirty FP nerds" logic. Terrible decisions IMHO.
[0]: https://www.artima.com/weblogs/viewpost.jsp?thread=147358