If you (like briandear) believe that including anti-tax arguments in a response would increase the efficacy of the response, I'd strongly suggest that you avoid a career in marketing or sales. Not trying to be snarky, but I can't think of a polite way of expressing how ineffective the inclusion of general anti-tax sentiment would be when attempting to persuade the target audience.
I never suggested the anti-tax arguments should be contained in the petition, I just said you were wrong in your claim that corporate taxes are irrelevant for entrepreneurs.
No, they merely reduce the incentive to innovate.
Taxes don't harm you while you innovate (which is a good thing - don't get me wrong), they harm you when you try to reap the proceeds of innovation.