I was actually against the TPP back when all the rumours were spinning around before the text was released. When the full text actually came out, in an old-fashioned sense of obligation I read the whole thing. Then I did it again. Very few fears I had held were grounded. To my surprise though, the narrative didn't change at all. What was actually contained in the agreement was irrelevant. People were afraid of sovereignty, environmental and worker protections and more before the text was released, and they were after.
Here's a couple of common criticisms that will easily identify a commenter as having not read the agreement:
"the TPP (or ISDS) allows companies to sue countries for lost profits" (they don't)
"this is a power grab by pharmaceutical companies" (Pharma was second after Tobacco at being upset with the deal)
"it undermines Net Neutrality" (there are specific points allowing net neutrality regulation, NN was an Obama policy plank FFS)
"TPP worsens environmental or labor conditions" (it actually provides minimum standards that will improve these in developing countries specifically around overfishing, trade of endangered animals, and minimum wage. It's why the deal was endorsed by the WWF)