See my Brother, Abu Jahl was also from a clan of Quraysh, but because of him we can not curse and call names or insult Tribe "Quuraysh".
My objection was purely you mentioning whole Tribe Quraysh, when you mention it like that, everyone, evey clam under Quraysh is the target, which Includes our beloved Moula and Prophet, so we must be very careful, because unknowingly we disrespect them, who we claim to love.
That is why, I started with due respect and ended with reminder.....because some times we just need a gentlr reminder to stop us from keep going towards a path which can destoy our iman.
You know better than me, I was trying something with good intentions.