Yes, it seems like the other noble families in Dorne don’t seem to care. I guess Oberyn’s oldest bastard daughter would become the heir even though they were responsible for assassinating the Prince and heir of Dorne.
In the books, the legitimate daughter of the dead king was made Queen by the death of her father and brother, so it was the Sand Snakes acting to support their female cousin over the weak king and brother.
But she was also a legitimate heir to the throne.