And Napoleon ended the Wars of the Revolution with Luneville and Amiens.

It was the allies who broke those treaties.

As for putting relatives on thrones, the Hapsburgs and Bourbons had set the example for that process in Italy and Spain. And Napoleon had to find ways to keep both Joseph and Jerome 'occupied' to keep them out of trouble. George III also had family 'troubles' with his offspring...

Are you saying that it was fine if the allies sought revenge against France after Napoleon became head of state but it was not fine for Napoleon and France to defend themselves?

I don't think that anyone expected the peace to be anything other than a short truce and that Napoleon shares the blame for its breakdown.

I don't think keeping his brothers 'occupied' was a good reason to annex territory to give them puppet kingdoms at the expense of other independent, sometimes neutral, states - you try to portray Napoleon as superior to the old dynasties, so 'they did it too' is a pretty weak excuse.

Of course Napoleon and France had a right to defend themselves, but French expansionism both before Napoleon's rule and during it, gave his enemies plenty of reason to see him as a threat to their interests and to attack him.