Finn Lewis returned home without much fanfare, mainly because his current status wouldn't allow for it. Otherwise, in what capacity should Finn come back? The Earth was theoretically his family's dominion in the past, but now it falls under the jurisdiction of the Federation, and the Federation is Finn.
It can be said that if Finn returned openly and aboveboard, the situation wouldn't have been so simple. Just dealing with the reception would have been enough of a headache, so Finn chose to come back quietly without any fuss.
It was only when Finn entered Earth's atmosphere that the middle-aged people were notified, but Finn didn't have time to meet them yet. Seeing his parents was the most crucial thing for him at the moment, and Kay Lee.
