I don't know if she can claim them as a tax deduction, but she has previously said that her haul videos make enough to earn back the cost of the clothes.
I'm not a CPA, but I've used turbo tax for business expenses, so clearly I am an expert /sneed
The tax deduction angle here isn't that she needs to wear the clothes to make the videos. I'm not sure about present tax laws, but it used to be that you could only deduct clothing you HAD to wear to work. For instance, if you had to wear scrubs, or work boots, or the clothing was integral to the job (as opposed to needing to dress office formal, they don't tell you exactly what you need to wear). As a content creator, if she was a furry, there's a decent chance she could declare her yiff suit or whatever they wear as essential to the job.
In the torid binges, the clothing is content. So just buying them is a business expense. No content, no channel. Not an exact comparison, but when she films her and the gang eating at the International House of So-Dee-Yums Grille, she can pick up the tab and claim it as a business expense. It was content, they talked about business (being in her video), it was a business lunch/dinner.
Muckbangers can probably claim a lot of their food expenses as business expenses, just a tiny version of the way the food network claims purchasing produce, staples, raw goods, whatever. Cooking youtubers can probably claim a lot of their cookware and serving plates.
It's no different than claiming ring lights, mics, computers, etc. as tools for work (though that gets messier with the depreciation schedule, best to have an accountant do that), and then the area she uses for her studio, if she claims the den, that's pretty massive, she can claim the percentage of rent and utilities based on the square footage of the studio.
But here's the thing: amber is much to stupid for these things, and her accountant isn't a mind reader, she can prompt for costs of business, but that's not going to trigger amber to think about the 7k on torrid. Niko Vomitcado is also too stupid, but he has a manager who probably keeps track of that and works with the accountant and makes sure he gets every deductible cent of every deduction for travel, those airbnbs, his set up, his muckbang meals, etc.
TL;DR: amber is too stupid to realize the hauls could be deductible cost of operation for a "content creator" like her. She's leaving dollars on the table all over the place (including not wisely and creatively monetizing her content, but that's another story)