It may not have a zillion libraries, but surprised that a site trying to be zippy uses low-contrast text (obviously, I am not a fan of the "increases engagement time" school of thought).
Agreed. I feel like I'm always the first in my company to complain when someone proposes a too-thin or too-light font style or color, but this read fine for me. I'd move away from monospace if anything, but I take that as a stylistic choice they made even if it hurts readability a little (not like thin gray that's used without even noticing: the dev already knows what's written there, or doesn't care if it's lorem ipsum, and checks the font only for form instead of also for function).
It passes minimum (AA) contrast recommendations but fails enhanced (AAA) contrast recommendations. I also wouldn't settle for it on a site I'm responsible for.