In recent days, when you ask someone that what is hinduism, there are many chances that you will get incorrect answers. This might be because the current education system that does not teach about religion or competitiveness among people to grow higher levels in career.
Was there any time earlier this kind of situation in history. I heard that before Adi Shankaracharya, people have so much of dilemma about what is hinduism exactly, but he raised to clear all their questions and taught them many things about religion. One more scenario is that the Lord Krishna told to Arjuna that he given the gita information to Lord Surya at first but as time lapsed, everyone forgot, until he gave that information to Arjuna.
What will happen to those who does not follow hindu principles because of poor knowledge of hindu rituals. Does god forgive them as they are not aware of these hindu principles. I think governments must take steps to educate their people about their religion to create good people in society like our kings did in the past.