Yes, an accurate term and at least a somewhat humanizing one. Finding it objectionable probably says more about you than it does about sex workers.
Let me be more specific: why is someone posing in a bikini or advertising Carl’s Jr. more appropriate than someone cooking dinner in a short skirt?
I’m sorry that your 7 year old is exposed to sexuality earlier than you feel comfortable with. That’s surely tough to navigate. But it’s not restricted to explicitly designated porn.