Does belief in the invalidity of disbelief (kufr) mean not being pleased with it, or, in other words, the heart's denial of it, even if the Muslim does not feel any hatred towards the denier?

Merely listening to TV series that contain doctrinal violations is not considered apostasy that expels one from the fold of Islam, unless the listener approves of what he hears and believes it or is pleased with it. Enjoying sins in general is not disbelief unless the person considers them lawful. Watching such things merely for entertainment, while believing in their falsehood, does not remove the sin, but it does remove the disbelief; because believing in their falsehood means not being pleased with them, which indicates the persistence of the essence of faith. Being pleased with disbelief means the heart's acceptance of it and not rejecting it. There is a difference between pleasure, which is the heart's tranquility and acceptance of what is presented, and merely watching and enjoying without pleasure or approval. Faith weakens with sin, but the doer does not become a disbeliever as long as his heart rejects it and does not consider it lawful.