Is this animal abuse?

My brother has a 3 year old tabby cat. Lately she's been scratching the back of her ear. There is a bald spot and it's very slightly pink. He's been applying "burts bees" for the past few days. It helps with itching on dogs, and cats. He says this happened before, and it went away after he started using it. Also, he found some nexgard flea treatment he had from a while ago that he applied. He said he can't take the cat for a proper vet visit, because he doesn't have the money. I feel like if you can't afford a simple vet visit, then you have no business having an animal. What do you think?

Is this animal abuse?
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