To pick on a few examples:

> a random vibecoded project

> If this weren't slop...

> I'm glad you're having fun vibecoding, and I like that you're interested in this area of research/engineering

These impute both his motives ("fun") and particularly his level of seriousness ("random project" and "I like that you're interested"—imputing passivity, as opposed to "are studying" or "are researching," which would be more appropriate given the amount of time invested). They're all dismissive and patronizing.

I would actually regard this as bullying. Some feedback.

(I suspect you're an academic, either a researcher or student. I know from my own experience that bullying is endemic in many academic research environments, so if you find the negativity you're receiving "strange," I suggest finding a therapist, who may help you understand how your communication habits could be negatively affecting other people and unintentionally damaging your relationships.)