Dark and Full Of Spoilers (GOT Season 8 Spoiler Thread Part 2)

[The Pilgrim]

Quite true. For all the people claiming that Daenerys is an out-of-control maniac who would kill anyone who seemed like a threat, she still trusted Jojo Snow to the bitter end despite him being the greatest threat to her power.

If Daenerys really was a ruthless psycopath, she would've had Jojo Snow killed (or chained in her deepest dungeon if that didn't work or she feels like keeping him as a love toy) the moment word started spreading he was the actual rightful king, instead of letting him walk around everywhere, which was what eventually took her down.

Dany needs to keep the ruse that she is a Liberator to herself. So she can only execute people if they give her some kind of excuse, even if it is a quasi-imagined slight. That is why she is willing to let Jon walk around until he gives her an excuse. And that is why Jon Snow, in the last scene, initially dares to stand up to her, but quickly (and uncharacteristically) understands that she is only waiting for an excuse to Dracarys him. So he smiles and plays along and even kisses her, before ending her.