Is the disconnect on skills around the semantics of "transferrable"? Your reply and parent point out that you see lots of skill transfer. But that's "you." What about from a prospective employer's point of view?

Here's a totally different example of the same. I spent 18 years getting really familiar with Smalltalk (specifically VisualWorks). Really familiar. I wasn't afraid to implement goto by mucking with context objects. If I could imagine it, I could do it. Learning and being proficient in Smalltalk has given me huge transferrable skills in modeling, messaging, factoring, abstraction, and so many other things. But telling a prospective employer that one of my skills is to rock things with Smalltalk, isn't very transferable at all. Getting them to accept that I've transferred those skills to be a better Python, Kotlin, C, Linux, Elixir, Swift guy is a long shot. So it's not directly transferrable.