Does the prohibition of watching films and TV series that contain Shar'i violations, such as revealing attire (tabarruj) and not lowering one's gaze, mean depriving the religious person of a means for education, learning, and seeing the ideas contained therein, thus rendering him ignorant while transgressors benefit from them?

The statement that a religious person remains ignorant if they do not watch haram films is incorrect. The Muslim nation abounds with educated and knowledgeable individuals who safeguard their eyes from watching such films and TV series. Even if we assume there is some benefit and knowledge to be gained from them, their harm and sin are far greater and more significant than any potential benefit.