Comment by sanswork
I switched fully to elixir close to a decade ago now and library availability is still lagging. For pretty much any company I can be pretty sure there will be JS/Ruby/Python/C#/Java integrations/libraries and occasionally you'll find one for elixir maintained by someone that stopped responding to github issues 3 years ago.
It's definitely better but I can definitely see why you'd still choose rails these days.
I agree with this sentiment, though in practice it doesn't seem to be much of an issue the vast majority of the time. Sometimes you do need that niche library though, and end up forking and updating for your needs.
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.