It is a factual description of what happened. I don't see a lot of room for interpretation here.

Except the distinction is you were describing intent and not the event. The event can be framed as a factual description, but the intent cannot unless you somehow have unique insight into the person's mind. You can infer intent in this situation, but you can't really claim it as an objective fact.

That's not to mention that the two (action to create a viral video and the intent to truly act out of kindness) don't have to be mutually exclusive. For example, if I did the same to create a viral video with the intent to shape social norms, that would probably be a more moral decision than to create a viral video for monetary gain.