Have you tried to hire a cleaning person recently? $200 will get a small apartment cleaned, maybe. For a thorough cleaning of a modest house prepare to pay 2-3x that at least.
For my small house (~1200 sq ft) the woman who cleans my house charges me $150, and she's usually here for around 2-2.5 hours. She hasn't increased her rate for me for over 10 years, so I imagine she'd charge more if I started out new.
So in other words, even 10 years ago she was charging roughly $75/hr, which is much more than the $20/hr that grandparent was citing.
If that's too expensive then the host should do the cleaning themselves. Or do like hotels and real B&Bs do and hire people as cleaners and pay them a salary.
The entitlement is through the roof, when people pretend to run a business refusing to do any work themselves and refusing to hire people. As long as there are clients willing to use AirBnB and pay cleaning fees, sure. But it is a scam and not much more, as another poster pointed out.
Two people spent roughly 2 hrs cleaning, so 4 hours of labor total + supplies. I think that's reasonable, but I wouldn't hire them for after every single short stay if I ran an Airbnb.
I'm just outside Seattle. My 2,500 sq ft 4br 3.5ba home gets cleaned every two weeks by two, sometimes three, people, for a minimum of 2 hours, usually 2.5, up to 3.