I don't understand the change of the default block parameter name. It's already _1, _2, etc. Why create yet another, backward-incompatible way?
And still, they doom march forward with the fragmentation of rbs and sorbet/tapioca, rather than adopting in-band gradual typing like Python did.
I think the greater problem is Ruby appears to be developed by a nearly-closed small clique of people who refuse to listen to others or to reason.