Yes. Having used both I can say indeed it is. Not only does GLP-1 slow digestion which limits what you can eat and when it also is being study for its effects on alcoholism etc reducing cravings. I and many people I know noticed the difference in cravings were not limited to food.
Oddly enough, no. It seems to affect a different desire pathway than dopamine and such. It’s not anhedonic, good stuff is still good and you still want it. Even food! It doesn’t make food not-pleasurable, just reduces hunger. It only seems to affect very particular kinds of cravings associated with food and addiction/compulsion, not sex drive (though maybe for “sex addicts”? IDK)