I'm sorry, but I have to take exception to this part of your statement. This is NOT a fantasy, what they are feeling. It's part and parcel of gender dysphoria. Pretty much *all* of the trans people I know want acceptance of others of their gender.
So sure, for a CDer, they may still be male identified. But their feelings are very real.
Despite that, I agree with you, and Lisa can do way better than the guy she's flirting with online.