[SPOILERS EXTENDED] Unpopular/Controversial Opinions
Share some unpopular opinions! Get downvoted! Let's start the War of the Five Kings in the comments with how divisive our opinions are.
Mine is that if R + L = J, then he's still illegitimate. Rhaegar was already married, to Elia Martell, and had consummated that marriage.
It doesn't matter that this would make both of Jon's parents highborn--he's still a bastard, just like Bloodraven.
Also, I think that Jon's name is JON. It's not Viserys, or Aemon, or Aegon. It's Jon. Ned found him and named him, and he named him for Jon Arryn. It doesn't matter what Rhaegar would've named him--Rhaegar DIDN'T name him. Ned did.
Jon's actual name is Jon Snow, not Aemon Targaryen, or whatever. He's a bastard. Bloodraven's last name is Waters, not Targaryen, even though his father was a Targaryen. Jon's last name is Snow, not Targaryen, because he's a bastard, too, and his first name is Jon, because that's what he was actually named.