Hi and welcome to ToS about!
Many companies today take advantage of their users. Users’ private data are sold at best and leaked or hacked at worst. To make matters worse, companies are trying to get away with murder. They write long, legally binding contracts (i.e. Terms of Service, Terms and Conditions, Terms of Use, and more) that nobody reads. These contracts give the companies the right to claim you agreed to sign away your rights while using their armies of lawyers to enforce their unfair terms.
Did you know that it would take you hundreds of hours (source) to read all the privacy policies of companies you agree to? If everyone read just the privacy policies of things they used, the country would lose almost a trillion dollars a year (and this was back over a decade ago).
ToS about exists because we believe this is all wrong even if it is somehow legal. We try to fight back using the very technology they use to reduce, and justify their reduction of, our rights.
Of the users, by the users, for the users.