Fortunately, the audience isn’t alone in teasing Jason, as everyone in King’s Landing joins in the fun, too. Jason presents Prince Aegon with a golden and red spear (of course Lannister colors) while telling Viserys that he intends to marry Rhaenyra to join House Targaryean and Lannister, obviously assuming that if he was born give her a son, that child will prevail. her birthright and become the new ruler of Westeros.
Viserys was DONE when everyone ignored his decision to name the Princess as his heir, and politely told Jason to kick the rock with the same energy as the schoolgirls in “The House Bunny.” Viserys even spoke to His Hand, Otto Hightower, about it later, saying “that man’s pride has pride”, which is a much kinder way of saying “Jason Lannister smelled her own fart.”
The Lannisters weren’t always the easiest to like, but at least the likes of Cersei and Tywin knew they were evil monsters. Jason reciprocates rights and tries to hide his nasty comments under Martin Shkreli’s smirk. It’s clear that Jason Lannister is a powerful little worm, armed with The Audacity™’s endless wealth and supply. And yet, I welcome his presence, if only because it’s a refreshing reminder that not all men in Westeros are violently manipulative monsters, some of them just losers.
https://www.slashfilm.com/1015300/a-tribute-to-jason-lannister-the-biggest-dweeb-on-house-of-the-dragon/ A tribute to Jason Lannister, the oldest dead in the house of dragons