I certainly agree with mudbug's comments. However, cream cheese is a common ingredient in many frozen desserts and when it's combined with other ingredients in this way it performs quite well even if frozen.
Cream cheese goes grainy when frozen. This can be mitigated slightly by combining it with sugar as sugar is a freezing point depressor. This is why cheesecakes freeze better than plain cream cheese does. I'm still not a fan of frozen cheesecake, though.