No, it isn't because it allows automatic formatting tools to do their job, rather than you manually having to indent everything properly, and bicker about the correct indentation style with co-workers.

Making whitespace semantically significant in this manner is akin to polutting HTML with lots of stylistic elements instead of sticking to semantics. Keep style and semantics separate.

Significant whitespace create a number of problems, which I cover here: https://erik-engheim.medium.com/the-case-against-significant-whitespace-32d391081155