Erlang was as easy as any of them for CRUD apps. I used Cowboy for it, which is comparable to Express (JS) or Gin (Go) in how it approaches things (i.e., simple request/response paradigm, with various helper functions to pull stuff out of the request data, or write into the response data, and easy to insert middleware as, again, just functions). Integrations outside of the app weren't especially painful; admittedly, we didn't have to integrate with an undocumented API whose only integration was via supplied library that was implemented only in Java or similar.
Is your objection just "CRUD apps have to integrate with lots of downstreams, and so for that you want a language that has a huge plethora of libraries to make those integrations easy"? Because in that case "maybe". But that's orthogonal to being a CRUD app; that's simply because you have a bajillion dependencies that have existing libraries.
There's real projects where you have to bind together 10 different things and using C++ is simply the most expedient option because getting FFI bindings made for everything is intractable. I have a feeling most of the people here (especially the ones downvoting me) only have web experience.
Being a fan of C++ is fine but you come across as biased.
The reason why elixir is fantastic is in such a ball of mud codebase, you can truly work in one corner of the codebase and not worry about anything else being disrupted. Testing story is also great. You can very simply do things you can't in other languages so easily, like concurrent tests that hit the database.
