Is this a red flag or should I just ask him what's going on Update

I've been with my boyfriend for almost 7 months. I love him. He's so nice and really charming. He's also great at sex. Sorry if that's TMI. But I don't have a bad thing to say about him. He's also very open with his feelings and that he sees a therapist. Today he posted on his Instagram stories. He was pissed off and said (and I'm paraphrasing) "I'm sick of certain people from my past just keep trying to try me. I don't understand how stupid people have to be to fuck someone over yet also let them in on stuff that can ruin their life. There's certain people who's life I could shit on right now. I know things that can break up families. Maybe cost some people their jobs. I could completely shit all over some lives right now. But I've chosen not to because I'm not that type of person. I've been doing some healing in therapy and learning about forgiveness. But I'm getting so close to throwing all that out the window and ruined some lives with my fucking mouth. So you know who you are. Stop fucking poking the bear. Stop poking me. You keep poking I'm about to fucking bite back and you can bitch about it. Stop poking the motherfucking bear! Y'all about to have me quote Kendrick Lamar but don't tell lies about me.... And I won't tell truths about you... With receipts." Then he flipped off the camera. Is it a red flag for a guy to say he has the power to destroy people's lives? Idk what is going on so idk if he is a narcissist or if something happened that pushed him too far. Is this a red flag? Should I just ask if he's okay?

Update: I did ask him what was going on and if he was ok. We talked about it and I'm not going to say exactly what's going on because I don't want to put his trauma out there but after we have talked about it and I got to see what's going on I don't think it was as much of a red flag as I thought before. I can't say if someone put me through what they put him through and then was obviously trying to provoke me that I would be pleased. But I did tell him it's not worth it. Based on what this person is doing it seems like they are trying to get a reaction out of him. So I told him if he reacts he is just giving that person what they want and while it's very clear this person is awful, exposing them won't make him feel better. Also the stuff he has on this person that can ruin their life... Yeah this person is not a good person and I personally would say something just to make sure their spouse knew the type of person they are. But saying something just as a petty revenge I told him won't make him feel better. He's calmed down now and said he's gonna talk to his therapist about it. After learning and seeing everything yeah someone was definitely poking him. And I wouldn't be pleased if someone who made my life hell was coming back to poke me but also know these type of people want a reaction.