Idk I've been reliably informed by a fairly inteligent anarchist I know that the Three Arrows was used before the SocDems got ahold of it, and that the third arrow originally meant capitalism not communism. He had like, evidence but I didnt save it. So personally I dont have the problem with the three arrows most people have. Its not like most people that use it are using it with that intention anyway.
This is a crap article, it completely glosses over 100% historical usage of 3 arrows as anticommunist symbol after the original one by SPD, and i find it highly suspicious that Polish site missed its usage as the logo of militant faction of PPS, party very much anticommunist and analogue to SPD.