Carseat question-- is this safe?

To clarify, Babe is strapped in nice and tight, he just has his swaddle wrapped around him too. The swaddle has a hole on the butt of it for the buckle to go through, the chest harness is in place and everything, the swaddle is just around him.
Is this safe? It helps him to relax in the car so much. If we don't swaddle him, he screams the entire car ride 😭
Here's another picture.