AITA for picking a name off of the Angel Tree??

I, 37F, want to start this post off by saying I’m not well off. I make a decent amount of money, enough to get buy paying my bills, and to splurge once in a while on myself. I had some splurge money so instead of spending it on myself, I decided to pick a name off of the Angel Tree at my local Walmart.
I have seen videos on tiktok about choosing names, I know some do it because they actually care while others do it for clout. I have done the Angel Tree before but the previous time was as a group with coworker and we all chipped in to the gifts.
The boy I picked loves spiderman. His needs were clothing and shoes, but he had some things he wished for.

I got everything on the list. The only difference was that I had a budget I had to stick too because I didn’t have a lot of "splurge money" to spend. About $110, which I know is not a lot of money to spend on someone for Christmas. I shopped smart with deals and other stores so that I could get everything on the list that he asked for.

I bought a couple clothing boxes, but I had leftover tape and wrapping paper from last year so that’s what I ended up using.

Well, I guess here’s where I might be the AH. I took the presents once they were wrapped back to Walmart because I guess that’s where you drop them off.

As I was walking in a woman about my age, or even a little younger, saw the bag I was carrying and asked if it was for a child from the Angel Tree. I informed her that it was. That’s when everything went down. She asked me if that was literally all I had bought for the kid.

I told her that I had gotten everything on his list, and that I hadn’t had much to spend. I was told that if I didn’t have a lot to spend then I shouldn’t have chosen a name off the tree to begin with, and left his name there for people who were better off than I was to pick his name. That I should’ve kept my "change" and used it for other things instead of getting a kid’s hope up.

She scoffed at me, said how "broke" people shouldn’t be allowed to even pick a name, and left me standing there feeling like a fucking idiot for wanting to get a child gifts for Christmas.

I went in and dropped the presents off before walking down to the Angel Tree. There were still a few names on it, almost the same amount as when I picked his name. So now I’m feeling like she was right and that I should’ve never participated to begin with.
So, like the title says, AITA for picking a name off of the Angel Tree??

EDIT: I see this in multiple comments so I will address it. I didnt know that you weren’t supposed to wrap angel tree gifts. This was my first time doing this solo. The previous time was with coworkers, I still wrapped my gift and wasnt told differently. So that’s why I wrapped these ones. The lady never told me that they weren’t supposed to be wrapped either.