It matters, because the start and end markers of code allow for easy recognition of where something starts and ends and make the move independent from things like indentation. In Python, if you wanted to do the same, you would have to change indentation in many cases. Also the language is less expression based, which makes it even harder to, for example slurp a block/unit of code, because it is not clear how far the slurping should go.

> I don’t know, go make it. But what would you imagine it to do? Moving blocks of indented code around is already easy without needing language-specific treatment.

Well, I am not the one claiming here, that it does not matter, whether there are start and end markers for blocks of code, so the onus is not on me to make this thing, it is up to you to prove it can be done. Lets not try to reverse the obligation of proof here.