Thanks for your feedback...yeah, there's still a lot to do to make it a fully developed game that someone would want to come back to. I learned a lot about programming and about Godot though!
You're right that there is an implied message, but did you notice that you cannot actually progress without taking the coins from the "families"? Your jump ability increases with each coin you collect, and you need to reach a certain number of coins to actually be able to make it to the island. The cost is to the others in the game, not yourself...I was hoping the "No!" audio clip when you take their coin would indicate this, but maybe it doesn't do a good enough job of doing so.