I guess that I think that every feminist believes in a single data set as fact as the Lilith report has been quoted for 6 or 7 years as a hard fact on which councils should decide to close strip venues.
Erm...I've never heard of the Lilith report. It was mentioned in an article linked to by Italian upthread as a source for a quote from an ex-stripper, then you jumped all over it, quoted other reports apparently negating it and accused all feminists ever of implicitly believing it and therefore cherrypicking their data. I think that's a strawman (strawfeminist?).
Whereas some (most?) pp are not arguing on the basis of data sets and reports. The argument is that stripping (and by extension lap-dancing and sex work) contributes to a society where women are viewed as sexual objects, not as real people. That stripping in and of itself is dehumanising. Not whether some strips clubs reduce or increase the crime rate or whether conditions for strippers are great.
If we want to go anecdotal, I had a friend too. She had been sexually abused by her father as a child, had a brief stint in prostitution and went on to run her very own burlesque business. She found it very empowering to have all kinds of people tell her she was attractive. So much so she gave (and may still give, I've lost touch) lessons in it.
The problem I have with that is that this 'empowerment' is actually just gaining external approval in a patriarchal society. The lessons are teaching women (and the odd man) that empowerment is gained by having other people tell you you're sexually attractive.
And that brings us back to what Italian quoted upthread: "I thought, well, I'm a sex object anyway, I might as well have it out on the table. It was as though I felt I couldn't do anything else. Everywhere I look I'm being told that my main source of power is my sexual power, my body is the best thing I have to offer and so to use those things in your job is empowering. But sexual power isn't power. It's meaningless in the real world."
Empowerment does not mean feeling good or better about yourself. It means gaining power. When the world's straight white male CEOs are doing a spot of stripping on stage in their spare time, that's when I'll revisit the idea of stripping being empowering.