This one is his favorite thing to do, because he wants you to see that he is the man for you, that he will be the best one you can have. But the important thing here is to see in which way he makes fun of them.
If he does it jokingly and it’s actually funny, it means he’s not an asshole who just wants to big himself up. He’s just a man in love who still hasn’t figured out how to approach you.
But if he does it in a mean way, that it actually makes you uncomfortable to hear it, he could be a toxic man.
He’s not doing it only to show you that the other guys are not for you, he’s doing it to boost his ego and that’s not the kind of man you need in your life.
It won’t be long before he starts using mind games on you to get that ego boost he so desperately needs.