No, it's not, many workers I know face repeated and regular stressful abuse, which is almost always worse if they are visibly part of a marginalized group of people, who also get racial and misogynistic slurs thrown in their face. There are dramatic differences in treatment, and many managers don't step in to protect their employees. That's not to say the other stuff you mention doesn't also occur.
It's not even necessarily retail, I know a really sweet Latina woman, she manages and runs multiple bicycle rental places in SF. People will be incredibly rude to her, but when she says, "Hold on, let me get someone else to help you" and gets a white male employee of hers, they are suddenly all smiles and apologetic and understanding.
I honestly would encourage folks here to remember to be good customers, to treat workers as you would want people to treat you, because workers in the US are almost always underpaid and dealing with work related stress.
Try to know what you want by looking online, understand that workers don't owe you happy smiles and social interaction beyond the goods and services you pay for, listen to and ask for suggestions and consider them as expert advice if you are having trouble making a decision, and if possible be polite and say thank you.