It's a quirky language, (omit a single '.' somewhere and you're in a for a world of hurt) has its neat parts and in general will come across as limiting once you have been exposed to other, more expressive languages. But that's probably also the reason it is still around, think of it as JAVA but then conceived in the gray past. The original intent was to make a programming language that would allow managers to program. That didn't quite work out.
Have you ever written about how this came to be? I find myself to be similarly broad in interest/experience, but I'd judge myself much more superficial/limited in this regard because of the breadth of it all. I'm curious how you manage it all.
That said, the guy doesn't even have a Wikipedia page! So how should I know?
If you want to take it off HN feel free: jacques@mattheij.com
I'm not a COBOL programmer, though, and not planning to be.
[1] https://www.microfocus.com/products/visual-cobol/
Are in the USA?
Edit: Clarification, you can't download a Mainframe VM so you need access to a Mainframe for training.
I tend to think about what you need to learn to actually work in a IBM Mainframe environment which is greater than just learning the language.