[dylan604]

> AirGradient (and several commenters here) feels like they're trying to spin their own QC problems as an indictment of modern journalism.

That's my take as well. I have seen several reviews where there were issues with the unit received where the unit was replaced and an update was made to the review. It's not like this is the only situation to have ever happened. A manufacture complaining about someone else complaining about a valid problem with what they received is just petty. Man up, admit there were problems, accept the loss in revenue by sending out replacement units. You screwed up the product during manufacturing/design/wherever, own it. Once you do that, stop whining about people correctly calling out defects in the units even if you did fix it. Until you recall/replace every defective unit (not just the ones with owners making noise about it), you have no standing to be upset someone making valid points about the defects.

This is what you could call a learning opportunity. Instead, they come across as petulant and whiny. Just take your medicine and grow and learn to not make the same mistake on future products