You have no right to say what Burgundy, or any other nation should do, with their rightful claims. Do I dictate on where other nations should expand? No.
The HRE is not just for you and as Emperor it is your duty is to protect the Empire. Not attack its members for no reason. I am sorry if you chose to annex it and risk losing your title, but that was your choice.
Likewise, many are aware of the Spanish-Austrian-TO alliance.
Poach you gave me no mention of Spains displeasure at Burgundy owning those two southern French provinces that session. You chose to use swords instead of words first. I hope you will learn to regret it.