At the bottom of out put from "gradle tasks" is:

To see all tasks and more detail, run with -all

There is no such switch. If the poor user tries to follow the instructions, they are rewarded with error messages.

I set priority to Major even though there is no direct functional impact, because I think the impact to new users is "major". Help tasks such as "tasks" are critical for new users, and instructing new users to do things wrong is a great way to turn off tentative users from Gradle.