Yes, Elm and its core packages had bugs and critical omissions that were outstanding for years, many of which affected our app. It was a running joke on our team to try to guess the vintage of the extant GitHub issue whenever we ran into a problem. I consciously fled the ecosystem and community many years ago so I don’t remember specifics anymore. And the repos were scrubbed of all past issues when 0.19 was released so we can’t go check either.
If you appreciate implied threats for creating a package which gives people some (unauthorized!) control over their own destiny, then I can see why this comment wouldn’t trouble you. Have fun in the sandbox.