Not a personal attack. Merely observing that he's coming off as someone I would not want to work with. This answers his tacit question of why they wouldn't accept his deal.

I gather that you didn't intend it as a personal attack, but we have to moderate by effects, not intent. By that standard, "how much of a pain in the ass you seem to be" is squarely in the personal attack category. Not a borderline call!