No, I don't think God decieves, but I'm not sure why He sends delusion to those who already have rejected Him.
Thess. 2:12 “God sends them a strong delusion, so that they may believe what is false”
The verse is written in an absolute sense of God's sovereignty.
Exodus 8:32 (NIV2011)
But this time also Pharaoh hardened his heart and would not let the people go.
When written from the perspective of God's absolute sovereignty,
Exodus 9:12 (NIV2011)
But the LORD hardened Pharaoh’s heart and he would not listen to Moses and Aaron, just as the LORD had said to Moses.
I actually know how all mankind can be fooled by a delusion. The name of such a delusion is "Evidence". Such a delusion is introduced by our secular education system ever since our childhood. Humans believe that something needs to be evidenced in order to considered a truth or fact. Our reality however doesn't run this way. Instead, humans in majority rely on putting faith in a "middle man" standing between a truth and humans in majority to reach a truth.
For an example, the "middle man" between a scientific truth and humans in majority is our scientists. Humans in majority don't have any evidence before they consider the existence of black holes a scientific fact. It is our scientists who act as a "middle man" to gather the evidence for the rest of human kind to get to such a truth, by faith!
Another example. Can you evidence one out of the million meals you ever had in your life time? You can't. We can to what you ate in a particular meal if you or a reliable eyewitness recorded down what you ate for the rest of human kind to believe with faith. That's way how we can reach the truth of what you ate. More often, it remains the only way! It is a process of human witnessing where evidence itself has no bearing!
This is how this very reality works, the delusion says otherwise though.