I heard the phrase "endemic to the problem" used in Marvel's Daredevil as follows:
A: [I could] have a little shop of my own.
B: You got your own office.
A: We have office space. An actual office would involve plantery[sic] and equipment, fax machines or whatever successful people use. (Chuckles) I don't think they use fax machines anymore. How would I know? Which is endemic to the problem.
Is this usage correct?
No, endemic means either native to an area or habitat (for flora and fauna).
The tsetse fly is endemic to Africa.
For diseases, it can additionally mean commonly found in a population.
Hookworm is endemic to the poor in Appalachia
I can only guess what was meant by A. Perhaps "indicative of the problem."
Disagree. The primary definition applies here. Endemic of the condition, if the condition, is "the problem" applies. The author is saying, "Regularly found among [this] problem".
en·dem·ic enˈdemik/ adjective 1. (of a disease or condition) regularly found among particular people or in a certain area.
