What a great parody of the thing that the link doesn’t say at all.

I agree with you. However, I think you’ve misunderstood what inlay hints look like. Here’s an example.

Indeed. There will be lots of times when you’ll be reading code without a while IDE attached. When doing code reviews in the browser, when looking at patch files or git diffs in the command line, when browsing code files on some git host, or when you’ve gone to a confrence and you left your laptop in the hotel room because Steve from accounting assured you it would just be a meet-and-greet with clients, but then some production bug hit and every odd-numbered request is returning a 401 for some reason, so you need to borrow Steve’s laptop to fix this.

The brackets thing is a real and well-known dogwhistle. If I say that the (((city council))) is putting chemicals in the water, then you should know I’m touting an anti-semetic conspiracy theory.

In this case, using «Guillemets» isn’t that, but the thing that they confused it for is real.