While I don't agree with it, I can at least sympathize with the point of view that you should be entitled to abstain from providing data about yourself or your behavior to a third party like Google.

However, your objection to the use of proprietary software seems completely misguided to me and reeks of overzealous naivety. The software you describe are tools for educating and conveying information. Why don't you object to your being forced to use other proprietary, non-software tools? Your teachers "force" you to use the textbook they select for the course because if every student used a different textbook, the teachers' jobs would become impossible. Why do you accept the "forced" textbook but not the forced software tool?

Your teachers force you to use a particular software tool because education would be hopelessly inefficient if every student were using different tools.