It isnt a technical workaround, it doesnt circumvent the feature. If your account is locked then unlisted posts can not be viewed regardless of this feature. If you lock your account and post publicly then you knowingly invite people to view those public posts. It isnt a hack or technical work around, it just lets you get notified of the posts people make that are public and still shared with the world regardless of a locked account.
Its no different than if a user just click on your profile and browsed through all the public posts you have listed, something you can do anyway.
So no, not at all, it doesnt take away any power from a user who locks their account or who wants their posts private.
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