[geofft]

Mozilla is the same organization behind Rust. "Unsteuctured shared-memory concurrency is inherently unsafe, and also not necessary for performance; here's how some structure permits a compiler to make it safe" would be a huge ideological win for certain parts of the company.

(Also, meanwhile, none of the native platforms that Mozilla is trying to replace have disabled threads.... so by that standard, Mozilla is already miles more credible here.)