Yes you have a point there.Talk to your domestic help, your auto driver, your dhobi, your barber, your vegetable vendor, your office boy, etc...and you will realise that there is so much more to be done, even amongst the educated.
But what you raised mainly concernes with awareness related issues.
People are ignorant about it because they have not been told so by their respective Govts.
Whole of Sec 26 of RTI act is there to take care of most of these issues. Basically it's the Govt's job to inform "We THE PEOPLE of INDIA" about the Act and it's usefullness and it's nitty-gritty .
An extensive and concerted campaign in line of "Pulse Polio" is what required for this.
If the Govt. is shirking away from it's responsibility the it's the duty of the informed citizenry to make the Govt. do it's duty first
Seeking information from PA's should be a simple affair. It should not involve such extensive exposure to legal jargons.
And no need to get Diplomas/PHDs to do that.