I think the question you are asking is slightly skewed. I currently work through an umbrella company, but I have in the past worked PAYE and also through my own limited company
I don't believe that is was skewed at all. The idea of the poll was to gather a simple snapshot of a point in time - at this current moment what payment option were our users who voted using?
If you want to debate the question a bit more in-depth always feel free to post in the thread.