This is a good definition. In particular, "Anti-oppressionists use "privilege" to describe a set of advantages (or lack of disadvantages) enjoyed by a majority group, who are usually unaware of the privilege they possess. ... A privileged person is not necessarily prejudiced (sexist, racist, etc) as an individual, but may be part of a broader pattern of *-ism even though unaware of it."
No, this is not a motte.
Why focus only specific majority groups and thereby ignore things like men in domestic violence issues getting a lot less help from society than women?
Nearly everyone has some advantages and disadvantages. It's often not helpful to conflate that huge back of advantages and disadvantages into a single variable.
As per a recent comment this thread is meant to voice contrarian opinions, that is anything this community tends not to agree with. Thus I ask you to post your contrarian views and upvote anything you do not agree with based on personal beliefs. Spam and trolling still needs to be downvoted.