Loch121
OG
Lol man look whoever on the throne at that specific moment the rightful king
there's a difference between rightful and standing
but I guess whoever has the clout,money,and forces to do it can make a claim.
The mad king didn't need it because he was crazy and Robert probably was a better choice in the short term,but bad in the long run because of The Lannisters
Jon is who was supposed to be next in line though if not for a crazy king and horny Robert and some concerned Starks