[Lio]

> Ruby is such an elegant language, but the strong and ongoing hostility to any sort of sensible gradual typing

I'm not sure what you're basing that on, gradual typing has been built into Ruby since 3.0 (2020). Sorbet can around a bit earlier in 2019.

There is on going work to improve both with RBS-Inline support now in Sorbet with runtime support hopefully on the way.

IRB uses RBS for autocompletion and Solargraph and Ruby-LSP both support it.

I would say there is no hostility to gradual typing in the Ruby community. Quite the opposite, people are being paid to work on it.