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).