Note that IRLO is intentionally a place for early-stage ideas and developing things. It's absolutely expected that there will be whole bunch of things here that many people don't like, or that discuss all sorts of changes.
But once proposals get more formal, "do we really need syntax here?"-type responses are very common. Some recent examples:
I am very wary of growing the number of reference types, especially in a sort of "narrow, targeted" fashion
I propose that we postpone considering this until we have enough const generics in nightly to have a concrete comparison between this and a pure library solution.
~ https://github.com/rust-lang/rfcs/pull/2581#issuecomment-435233740
And yes, this conversation does come up occasionally. One good reply from last time:
Another thread: Raising the bar for introducing new syntax