I don't think OP was unkind at all; maybe a bit blunt, but telling someone you think they've been lied to and duped and that they're a victim is not unkind in my opinion. Powerful entities have been lying and duping common people for... well, probably for all of human history. The OP may or may not be correct, but from my reading of their post, I don't think they intended that as an attack of any kind, but rather a commiseration.