I tend to agree with you. These surgeries are NOT “sex change” surgery. They are castration or hysterectomy/ovarectomy. Nobody can become a different sex. Not now. Maybe in 20–50 years it might be possible to grow those body parts from your cells and become the opposite sex. It’s not remotely possible now.
Some people are surprised by my position, but I have seen how people that get these surgeries have their worlds contract. As phenotypic males or females interested in the same sex, they have lots of options. There are far fewer options for those that have surgery. Their world contracts to other trans people for the most part, and most of those are angry. Just what i’ve observed.