Having just run into this again in particularly painful way (a lot of compact little closures), I wanted to bring this up again. There's been almost no activity on the subject since 2022, but the discussions (bug, post) never resolved to “this is good behavior.” It seems universally disliked and regarded as a bug.
What would it take to finally address this (and by that I mean, make the compiler no longer care about unused shorthand arguments?