My phone number starts 04000. When giving out my number do you really expect me to say "zero four triple zero" when "oh four triple oh" is so much simpler?
My old apartment number had an O in it. But my landlord recommended I input it as 0, because the the O would get mistaken as a D, and my mail would go to the wrong apartment.
Also I feel like it's a strange choice to broadcast that you can't tolerate like a base minimum of ambiguity even if it's more ergonomic for people in daily life and speech and which virtually never produces significant misunderstandings of any kind.