One could also argue that snark may be angry, but angry isn’t always snark. You can earnestly assert anger and the reasons why you are calling something or someone out. Don’t get me wrong, I enjoy snark, but there are times when a writer is discussing such serious issues that dispensing with the snark to gain an ear from an otherwise shut-off constituency is more important and effective. On the other hand, the call for kumbaya all around, genuflecting at the soldiers schtick, and you have to adhere no matter what is ridiculous. You can be angry and relatively respectful (at least of the subject) at the same time.
But if someone only wants to write happy fluffy pieces and never criticism, so be it. It’s easy to tell who the cheerleaders are. On the other side, it’s also easy to see who really doesn’t give a shit, but who is sarcastic for either the joke or the kill.