To clarify for you in simple terms:
normal players =/= clan
admins =/= clan
being in the steam community group =/= clan

Clan members have been around for a long time and are highly respected and experienced contributors to the IBIS community.

Here, "team" and "community group" and "clan" are not interchangeable terms. Saying you're in the clan is sorta disrespectful and that's why you're getting scorned.

Anyway, welcome! I hope my P90 and your face gets to know each other very well in zombie mod.