The validity of Aleem being the official ARB agent is rock solid as it can be, as he is family. If you are familiar with Hira Arms in Lahore, you'll know if its true or not, go pay them a visit sometime, and for a matter of fact a lot members here know Aleem very well and source their ARB accessories from him. I've bought from him too and vouch for him.
You sir present your opinion based on the internet, while Aleem has being doing this not just now but for a long time. He already has a well established clientele of off-roading and hunting hobbyists yet expansion is limited to who believes, he is old school and really sees no point in the idea that he has to convince someone he is the real deal. His products speak for themselves and thus lots of people buy from him. He himself is a seasoned off-roader, participated in quite a few rallies himself and in my opinion a rare bucket of 4x4 knowledge. You cannot judge something just based on the internet in today's world. You gotta see it to believe it.
Those who choose not to believe it see the benefits being reaped by others. In my humble opinion, you sir are from Lahore, go pay Hira Arms a visit, have a talk with Aleem, see his stock and then decide what you feel is right.