Out of curiosity, does knowing COBOL pay well in 2021? It seems COBOL programmers are in critical demand and free market economics should mean that COBOL programmers get paid premiums.
I would research this by myself, but not really sure where to start - and googling “COBOL Developer Salary” leads to results in the 80-120k range (which is no small number, but not significantly different from a modern language developer)