I totally agree and think it's because polyglot programming still kinda sucks. Either you use a universally frustrating ORM or dataframe library or you pass your db strings that even your most integrated IDEs can't really integrate into the rest of your code.

If we figured out how to do type inference and go-to-definition and all the other nice LSP stuff across language boundaries in a good way, I'd hope the things you mention would all get a lot more widely used.