As a Captain, I value and rely on the skill and professionalism of all first officers I fly with day to day. It's a team effort.
NF's comments are sarcastic and inappropriate.
If you're sick, stay home. If you have allergies, take the meds ... I do. I've told plenty of FOs my allergies are acting up but I'm fine. No issues whatsoever. We all have an obligation to one another to do the right thing at all times. Chasing the bank or the $$$ isn't appropriate at any time.