> I don’t use the mouse when editing code, so this particular mistake does not happen to me.

Fair point.

> Less visual noise.

It doesn't solve this problem of your eyes guessing the correct indentation, especially when using two spaces (I hate two spaces even with braces). You could set up your IDE so it highlights the block and prints a hint at the end what block is ending, however you lose this once you open a plain text editor.

The point of using braces for this is that you can count them.

Also, if you were to print the code without braces on a paper, it would be a hard time reading, since the paper is much smaller than a 27" monitor.

> And the ability to use braces for other syntax.

There's other ways. For example, {} in Swift can be also used for ResultBuilder. And if you need the braces without knowing the type upfront, you can prefix it e.g. ${}.