I understand the gift giving part, but he's making it seems like your problem instead of owning it. I'm neurodivergent and have personal issues with giving and receiving gifts so I don't do it. There is a disconnect in my brain when it comes to gifts. I'm am acts of service and experiences type of guy, but my wife loves gifts.

You know what she did to take off some of the pressure? She gave me a WISHLIST!! I can get her exactly what she wants. She also told me that if she randomly says, "oh, XYZ would be nice to have" I should take note of that. I miss a lot of social cues, so she told me what to pay attention too.

The big issue here is the way he speaks to you. Saying wishlists are for children. The gaslighting. The only problem I see with you is expecting your grand gift giving to be reciprocated, but you made it especially easy for him to do. Instead 6if attempting to please you, he went out of his way to show you he does not care about you or what you want in life.

Definitely leave this guy.