I doubt what I am going to post will answer the OP's question but here is my tuppence worth.
When thinking about whether an activity/action is consistent with my feminist politics, I use the young woman/older woman/pregnant woman/man analogy.
In other words - do men do it/are men expected to do it/are men judged for doing or not doing it.
And, imagine the scene with very young women, older women or pregnant women.
Helps to take off the patriarchy blinkers and get some perspective.
And then think about it from a patriarchal perspective anew;
Would men pay to watch their elderly mother in laws wash their cars whilst scantily dressed? Would men pay to watch a group of pregnant women do the same (actually there are probably some sick fucks who would but I'm talking about normal men here)?
Or would the above be ridiculous, weird, demeaning?
So this activity is yuck because of its 'women get paid to be leered at' aspect, but it is also gross because it is an activity where only the body confident and 'attractive as dictated by patriarchy' are welcome to join in. Any other older fatter wrinklier less brainwashed jealous women can just fuck off and make the sandwiches or something whilst the deluded pretty ones are ogled admired and empowerfulized have fun.
Nice.