Meeting family for the first time over the holidays is a lot of pressure. I can completely understand wanting to meet them, but a time when everyone is supposed to be putting on a show and acting like good hosts is a really stressful time.

I recommend addressing this after the holidays. If you end up guilting him into bringing you to this year's holidays, it's likely he will resent you. It is perfectly reasonable to arrange to meet his parents a couple months after, in a less stressful environment and with no drunk extended family around.

If you absolutely can't stand waiting, when you talk to him again please emphasize that while you certainly care about his consideration, he should not be making decisions simply to spare your feelings. You want to meet his family, and you're not worried about their behaviour because they're still his family. There's a difference between looking out for you and hiding you, and unfortunately right now it feels like the latter.