Am I the jerk for destroying family Christmas?

I've been with my wife for about five years married for two and we have a one-year-old son.

My mom is a type of person who doesn't like change and doesn't like new people and keeps

to herself. That being said, she isn't controlling and doesn't seem to care what her kids do with

their lives, but she doesn't like when she feels things are pushed on her. She is also someone who

will keep doing what she does without thinking. So, when we continue to buy me lavish gifts,

but nothing for my wife or baby, I didn't think it was malicious, but it hurt my wife

that even after marriage, my mom wasn't buying her gifts. I sat down with my mom and I explained

this. My mom was totally shocked and couldn't believe that my wife expected a gift. I tried to

explain that my wife is part of the family now, but my mom was upset and said that she has three

kids and shouldn't have to pretend my wife is her kid. She seemed really surprised, so I do

think that that was genuine and she kept saying how mortified she would be if her husband expected

gifts from her parents and that she wouldn't be with such a quote entitled child. Finally,

I told my mom to stop. It is okay if she has a difference of opinion, but she is hurting my wife

and it needs to stop. My mom thought about it for a couple of months, talked to my sisters who

said she should just suck it up and buy gifts for our partners and her ultimate decision was that

she didn't want to host Christmas anymore. I thought she was bluffing, so I ignored it for months.

I realized she was being serious and said fine, we can do it at my house, but she didn't want to come.

I mailed her a small gift as a test. She mailed it back. Finally, I was like, screw it and did

Christmas with my wife, sisters and their partners. Both of my sisters were miserable the entire time

and one cried, which I thought was crazily dramatic. My mom was on vacation and had her phone off.

The sister who cried finally blew up that my wife and I ruined Christmas and ruined our family

...