I think indentation tries to step towards an outline, but without the item indicators we’d use in an outline format. This might actually be a selling point for something like YAMLScript.

https://yamlscript.org/

I get why people blame indentation like this. I don't think it's right or wrong to ignore the tooling that directly addresses minor issues with indentation or matching braces honestly.

That said, my preference is to use the tools built into my editor and available on the CLI or web to assist and fix formatting and syntax. You get instant feedback on incorrect formatting, and I generally find that synthetic scope mistakes (regardless of method) are eliminated.