All retail and service workers deserve politeness and respect as a baseline unless they're super aggressive for some reason, and I think it's the least of courtesies to try to be pleasant. No issues for better pay, better hazard benefits (or at least appropriate tools from the company provided to keep themselves safe in a pandemic), or accepting their job do matter though it's probably not essential. Even OpenOffice, of course. But God is that head deep into her navel.