I would argue it’s not possible for Rust to have a “world-class” toolkit, because it seems implied that it’d be cross-platform. This means it’ll always lag behind UIKit, AppKit, GTK/Qt, and... whatever Windows has these days.
The Iced project used as an example has a custom renderer for example... does it support VoiceOver? Does it support every standard Cocoa keyboard shortcut?
Rust wrappers for these existing libraries (some exist) that maintain all functionality is what would allow “world-class” apps to be built in pure Rust IMO.
I work at a public company, about half of my TC is stocks. I get them “for free”, and I can immediately sell them for real money (which I do and buy index funds).
AIUI, startups “compensate” you in paper stock that you can’t sell, and even worse, they actually make you pay them for it! This seems like a completely terrible deal.
But really my objection is that the company is “offering” you the opportunity to pay them to “buy” part of your TC.