Front-end Rust framework performance prognosis

Wanted to get thoughts from the Rust experts on this - the author of the Yew framework seems to think that Web Assembly Interface Types (https://github.com/WebAssembly/interface-types/blob/master/proposals/interface-types/Explainer.md) will allow Yew to eventually become faster than Vue, React, Angular, etc. Is there general consensus on this in the Rust community? The prospect of mixing Rust (for the performance critical pieces) with TS on the front end doesn't seem super appealing to me.

I'm trying to get a sense for how realistic it is to expect 100% Rust stacks to become popular in the future. If so, investing time getting proficient in Rust seems even more compelling than it already is.