I've never had the experience that learning a language is harder than learning the culture and (usually bad) tools around it. Stuff like "oh no, I know the official docs say that, but no one does it that way" or "this tool is a 'hip, faster, drop-in replacement' and you'll see it recommended everywhere but the last part is actaully a lie" or "the platform says it supports this language but actually the tools are so broken that it effectively does not" et c.

[EDIT] I had in mind Android, Yarn, and AWS Lambda + Java (as of a couple years ago, anyway), in order, for those examples, for the curious :-)