It's definitely better but I can definitely see why you'd still choose rails these days.
Given how rarely this comes up it feels like a tolerable problem that will only diminish as Elixir adoption continues to increase; I am aware of many rail shops that are slowly and quietly switching everything to Elixir, and it feels like that snowball continues to pick up pace as Elixir improves and those libraries are created.
I did maybe 5 years of Phoenix for a customer of mine and went back to Rails for another customer. It's good enough and overall Rails is easier to deploy IMHO. Capistrano vs I don't remember what.