I don't believe I've ever seen/discussed the three arrows as an anti-communist symbol today though.

Honestly I agree with you there, but I can't help but get (fairly) imo irked when I see someone, in need of an antifascist symbol, reaching for the explicitly anticommunist one as... and eyebrow raiser to say the least. Especially considering there are a lot of other ones that just... aren't explicitly anticommunist? Why go for the 3 arrows when you can just go for a instead?