This sort of person intends to sleep in the bed that they make, so best to leave them to it.
On the other hand...
2) I'm an Elixir guy looking for work for a few months now. I've been applying to Ruby on Rails jobs where it makes sense (it was a thing I used to do). Should I be concerned that this is the perception out there? IS this the perception out there? I've heard this attitude from businesspeople in the past (such as from Brad Birnbaum, a former boss who is now at Kustomer; this was while I was at Desk.com) at times, "I don't want academics, I want builders". He said this to me repeatedly; in hindsight he was probably trying to signal to me that I was starting to look too academic.
Notably, all of the apps that the businesspeople I've heard say that, are now shut down after being bought out (and Brad is now a bajillionaire after a Meta acquisition). Hmmmmmm. But I guess that was the plan all along: To build only good enough to last to a buyout.