[annywhey]

Most of the effort in making a language a production language is on the tools and libraries end of things, and LSP is sort of the tip of the iceberg in terms of getting into that stuff. Before that, you probably want to have features like "good error messages" or "working string and math libraries".

For a long period in the past 15-odd years, new "Web" languages were getting plenty of adoption because the state of the tooling for that segment remained barebones everywhere, with a lot of functionality already in SQL or JS and anything in between being glue, and so competition on language features and syntax took precedent. It's probably in a consolidation phase now - things are getting more exciting in the lower layers of the stack instead.