I wouldn't consider Rust to fall in this category to be honest, as there are plenty of issues/RFCs where people were bike shedding for months or even years.
I'd argue that if Swift isn't more popular, it is certainly more visible than Rust. And probably just more popular.
Apple's marketing around Swift advertises the "open source" aspect, and there's a lot of money to be made making iOS apps, so there's naturally going to be a lot of noise around proposals/developments.