RedoxOS would likely never become feature complete enough to be a stable, useful and daily-drivable OS. It's currently a hobbyist OS that is mainly used as a testbed for OS programming in Rust.
If the RedoxOs devs could port the Cosmic DE, they'd become one of the best Toy OS and maybe become used on some serious projects . This could give them enough funds to become a viable OS used by megacorps on infrastructures where security is critical and it may lead it to develop into a truly daily drivable OS.