[2021] This piece of dialogue kinda made me feel attacked...

Hello. There is more to it than that one screenshot and piece of dialogue. You have to factor in who Custos is, his background and where he comes from. You also have to consider who, and what, Omnis is. Omnis and the Nosferatu are masters at subterfuge. They are spymasters and operate in the shadows of misinformation and uncertainty. Omnis especially makes a point out of wearing a mask, so to never show their face - not even to their most trusted kin. Without wanting to spoil too much I will leave it at that, ask everyone to go a bit beyond two lines of text and explore additional narrative and lore around Omnis before making too many assumptions.