It's the ending that getting set up though. Two of those four are already in position (Sansa and Gendry). Dany is highly unlikely to survive the final episode, leaving Jon as king in King's Landing (or, likely moving to Dragonstone). Tyrion gets awarded a seat for 1) his efforts to save the people of King's Landing both here and Battle of Blackwater (earning Jon's vote), 2) his protection of Sansa (earning her vote), and 3) for helping Gendry and Davos escape Flea Bottom.
The show has always been about the characters. In this ending, you have two "bastards," an imp, and a lady jointly ruling the realm, and none of the four of them ever really wanted it.