I do not understand the Velaryons in the show.

Not only are Rhaenyra and Daemon the main suspects in the murder of their son Laenor (in fact they WANTED to be considered the main suspects, to scare their enemies) - not only did their daughter Laena die in Essos with Daemon even though she wanted to come back home - not only did Daemon behead Corlys' brother for basically telling the truth - not only did Rhaenyra marry her son with the idea of having his children but then proceeded to cuckold him - not only is Rhaenyra trying to supplant house Velaryons from the male side by making Strongs the head of the house - but now Rhaenyra has sent Rhaenys to die at Rook's Rest when she could've gone herself, could've accompanied Rhaenys alongside with Jace, etc.

How have they ever supported Rhaenyra? Why is Corlys hyping up the people who killed his son (to his knowedge), his brother and cucked his bloodline? At this point he should be really, really disillusioned with her. He should be on the brink of defection, really. Is their role in the show to just be the designated token Rhaenyra simps?