Is it? The comments aren't explicitly anti-masking, but many of the comments are from people who are rationalizing why it's OK in their circumstance to unmask. Some of the newer comments are better but when I first checked the thread yesterday almost all of them were making excuses about why it doesn't really matter or why they can't for such-and-such reason (that I find disputable, "can't" in these contexts often just means they don't want to give up whatever aspect of their lifestyle makes masking difficult and thus excuses their behavior). I joked to my wife yesterday when I was getting annoyed about the thread that it gave me the same impression as when people think up weird hypotheticals about when it is okay to say slurs or whatever.