I really can't see how it presumes a lot of knowledge. Half the words are common English words to indicate what is happening, you don't need to know the technicalities of what's going on to know you gave permissions to an app and want to take them away.
Hell, I even checked, "permissions google" still has the account management link as the first one there. So even just knowing the word permission, which is a common English term to describe what you just gave the app, and the wording Google uses (see below) to refer to it, is enough to get to that page. You don't need to be a CS major to figure that out.
As I said above, Google even uses the terms when you do the signin: https://jaxenter.com/wp-content/uploads/2015/05/google-permi... and gives you direct instructions on how to manage them.