I have never heard him claim to speak for Silicon Valley.
The question becomes then, what do you consider your line. Is this about his outsized financial support? What if he gave his RNC speech and only donated $10,000?
Then --- respectfully --- you have never heard him speak in favor of Donald Trump, and you should go watch his speech before arguing about it. It's pretty scary. Maybe after seeing it, you'll understand the vehemence of the anti-Thiel sentiment.
Re-read. "We don’t accept such incompetence in Silicon Valley, and we must not accept it from our government." I think using the word "we" is the closest he gets to your interpretation, but even here it's clear to me that his views are his own.
The question becomes then, what do you consider your line. Is this about his outsized financial support? What if he gave his RNC speech and only donated $10,000?