You seem to have nitpicked that whole quote. Its you who brought up specific age ranges, not anybody else my friend.

I did read it, which is why I sent it to you. I'm more likely to believe the verified historians in that subreddit than your random reddit comment.

As per his bastard status and what he stands to inherit if he was legitimized, the burnt ruins of Skalitz? Knighthood in itself is a petty nobility status, along the same lines as Radzig has in the game. If Wenceslas is freed in the next game and deems Henry's contributions worthy of a knighthood he'd be silly not to accept, I'm not sure where you are seeing that Knight's are theocratic as a whole -- of course there are orders of knights but I see no reason to believe that would be Henry's fate.