Give the context, dude. He is not really a green flag but putting this like he just hate Dane to go to his job when it's more than just that. It's not the job, it's seeing Dane dying multiple times. What happen in the end? He saved him from dying. Dane is a suicidal, not just a hero. And before Grayson let go of Dane, he shows him the different kind of love that he could receive from other people because he can't leave him in a bad condition. He fixed everything first before he left him. That's the context. It does not equate to green flag that everyone is referring to but it is one of the selfless thing a human could do.
He is actually a green flag towards Dane that's why he literally let go of Dane in the novel he literally thought he doesn't deserve Dane at all that's why he separated himself bcs he's got the control despite having such a normal mindset bcs of his dominant alpha genes he is also the only Miller who did this even his own father didn't do this things to koi unlike Grayson who's willing to change for dane, he literally got better
Well I guess so? Haha jk. Anyway for me he is. For Grayson with no
EQ and an extreme (special?) dominant alpha to boot made a sacrifice that not even his father and grandpa can do was evident of his love for dane. Yes the thought indeed crossed his mind but he never acted on it. Instead, he let Dane go.. and we're talking about the same person who has been obsessed with finding his true love/fated mate for the longest time, yet somehow had the guts to let Dane go.

Had to read the novel cz wtf is grayson thinking. haha but boy when love hits him, it hits him pretty hard haha I can say he's a green flag despite having a very challenging mindset haha