I'm not exactly good at it, but you need to ignore the snark as you see it.
Ignoring the snark, you then see if the issue really exists/is a fair point/is something you care about, and you respond as you would to any non-snark filled issue.
I don't see a point in trying to provoke the person, or 'educate' them, just respond neutrally and professionally, or happy and chipper if you can do it without it dripping in irony.
I'm not exactly good at it, but you need to ignore the snark as you see it.
Ignoring the snark, you then see if the issue really exists/is a fair point/is something you care about, and you respond as you would to any non-snark filled issue.
I don't see a point in trying to provoke the person, or 'educate' them, just respond neutrally and professionally, or happy and chipper if you can do it without it dripping in irony.