The core accusation: what did Dumbledore do that was manipulative?

He raised Harry to die. He knew from early in the series that Harry carried a fragment of Voldemort's soul and would need to be killed in order for Voldemort to be mortal. He arranged Harry's entire education, the Horcrux hunt, and the emotional support network around him while withholding this single crucial fact. He told Snape to give Harry this information only when the moment was right — i.e., when it was too late for Harry to refuse.

Is this manipulation, or is it necessary leadership?

Both arguments have force. The pro-Dumbledore case: if Harry had known from the beginning, he might have acted prematurely, incompletely, or chosen a different path — one that didn't destroy Voldemort fully. The knowledge needed to come at the right moment. Leaders sometimes must withhold painful truths to preserve the mission.

The anti-Dumbledore case: Harry was a person, not a chess piece. He had the right to make an informed choice about whether to sacrifice himself. Dumbledore removed that choice, and the relationship between them — one of deep mutual trust — was built partly on deception.

What does Snape's role reveal about Dumbledore's methods?

Dumbledore asked Snape to spy at enormous personal risk, maintain Occlumency against Voldemort, and ultimately kill Dumbledore himself — all while maintaining a persona of villainy to protect his cover. He asked Snape to carry an impossible burden alone. The fact that Snape did it out of love for Lily doesn't make the ask less extreme.

How should we read Dumbledore after the final revelation?

As a great man with a genuine flaw: he loved the greater good more than the specific people in front of him. This is the flaw of the consequentialist — trading individual dignity for collective outcome. He acknowledged this, at least internally, near the end.

Does this make Dumbledore a villain?

No. It makes him human — capable of profound wisdom and genuine care alongside choices that should have been made differently. The most honest reading: Dumbledore was the best person for the job, and the job required things no good person should be comfortable doing.