I just think the tone rubbed people up the wrong way.
However, that is just my personal opinion about the reason for Travis' tweets (which happen every time a large vulnerability is discovered), and I have no security background. I trust that people like Travis, who have done a lot of work to improve security, to know how to minimize the damage from the vulnerabilities.
What a surprise! Self-importance in an security industry that relies on reputation for consulting gigs?[1] You might have missed the ominous, grandiose vulnerability names, fancy logos and the PR-blitz now associated with any vulnerability worth a damn.
I'm an outsider, but even I know NetSec twittersphere is that last place to expect 'sober' communication.
1. I don't agree with your assessment that there was self-service in Tavis' tweet. To my knowledge Google Zero doesn't consult for anyone, he was probably excited and very surprised by what he saw and he needed to get it off his chest.