You're conflating different issues. A browser based on an open-source codebase with many people auditing its source-code and network traffic (there was much pa

You're conflating different issues. A browser based on an open-source codebase with many people auditing its source-code and network traffic (there was much paranoia about Chrome when it was released). And even in that case, you have the choice to use a completely open-source browser that has a different stance on user privacy (Firefox). An NPAPI plugin that can be easily disabled. A third-party BOX MITM all your secure connections without your knowledge. I don't think the above are comparable in magnitude.