"B-but they are dodging taxes, that's not sexist to report them!"
Except they weren't reported because they were dodging taxes. Frankly, these men don't even actually have proof their victims don't report their profits from snapchat, afaik. Even if they did, they were reported solely because they're, to quote these sad excuses for human flesh, "thots". Used in a slut-shamey way to boot. Thot being a term, as per most definitions I've read, referring to women of low income who like acting they are of high income and are promiscuous and/or flirtatious.
Like. Suppose you actually discovered that one of these low-income women was dodging taxes, and holding nothing else against them, you reported them. You're a bit of a bootlicking dick because you're deciding to report someone who doesn't have a lot of money in the first place... but no, you're right, that wouldn't be sexist.
But these men are not reporting and congratulating their comrades and acquaintances for reporting these women because of tax evasion. They're doing it because they hate... well, they hate women, flat out, but especially "thots". So, this is entirely a sexist event.