In my view, one cannot understand Hinduism unless he is a Hindu. I openly admit I will never understand Baha'i'. In fact I have a very difficult time understanding any non-Hindu faith at all. In my view, the Dharmic view, we're talking about two very different meanings of 'understanding'. Yours is on an intellectual level. and I'll admit a non-Hindu might understand Hinduism a bit on that level. But when I speak of understanding, I mean 'living it, experiencing it. This is very similar to understanding pain. A person can't understand pain very well without experiencing it. So too with religion. That's why I can't understand Baha'i'. Intellectually yes, but not on any experiential level. I'm not a Baha'i'.
So from that perspective, as much as you or any other Baha'i' may make claims about understanding Hinduism, it is impossible, because you aren't a Hindu.
Again ... very different paradigms. I know and admit when I don't understand something, but for some reason that's really hard to do in Abrahamic faiths. So we have the conundrum of non-Hindus claiming to know more about Hinduism than the Hindus themselves do, lol. Intellectually, maybe. But standing there inm front of Ganesha feeling all the warmth, the love, having Him remove obstacles, put a smile on your face where none existed, laugh with your odd insights like a friendly big brother. Nah, you can't get that. You're not a Hindu.
I definitely don't understand Hinduism as from person who, lives it.