was he not hiding being an omega? or im confusing that with smth else

Nope, he doesn’t advertise it but he’s not hiding it. When the alpha smelled his pheromones cuz his suppressants were failing, he was offended by his words but he was upfront with his designation. Plus his CEO defended him against what he thought was omega discrimination/sexual harassment. So no hiding. The ABO mechanics in this world are a lot more chill and it appears omegas are treated more or less like everyone else.