Galadriel shouldn’t be blinded by revenge and recklessness, because Feanor murdered thousands of his own kin over his stolen Silmarils and Galadriel knew he would do something horrible for his own selfish reasons.
If she can see evil inside another person’s soul, surely she can see the consequences of her own actions 5 minutes before she takes said actions? Like jumping out of a boat hundreds of miles from any land mass? Or maybe she would know how and why the Queen of Numenor felt about helping her, prior to getting upset and yelling?
Nothing about her character in the Rings of Power has any respect for Tolkien’s work, because they dumbed her down and made her act incredibly stupid on multiple occasions, completely ignoring the power and wisdom she already possesses.