Yep. The industry is not the same everywhere. The high paying jobs on the US coasts hire for intelligence and general programming skills. Everywhere else, you're expected to have specific experience in their language and framework. Every job I've had, I've overheard applicants being dismissed out of hand because they didn't use the exact language we were using. It's ridiculous, but it's reality.

If you can learn it quickly on the job, you can learn it before you apply for the job.

You should even pay money to learn it if learning alone isn't your thing.

Pay for a course or even an actual teacher/tutor.