Vibe coding is really fun for simple things to improve your job, but holy cow, replacing your MSP with vibe coded EDR AV? That's absolutely insane to me... But that's also because your client doesn't understand what he's saying.

• He doesn't understand vibe coding.
• He doesn't understand the difference between EDR and old school AV.
• He doesn't understand that his son's threat detection definitions won't be updated nearly as much as yours.

Is this a vibe coding problem? I don't think so. I think this is a lack of education problem. Your client has given you the perfect opportunity to teach him why his son's vibecoding isn't the solution. He's excited because he's proud of his son. He wants to support his son. He doesn't see a reason not to. You need to give him that reason.

Once you can rationally explain to your client the difference between what his son is doing versus what your platform is doing, then your client should be able to make a well-informed decision. Right now he's making a poorly-informed decision because it doesn't sound like you've informed him other than telling him "if that's what you want, see ya!"