I doubt very many skater’s careers are going to be shortened as a direct result of quads being allowed in the SP.
I Still don’t understand what artistry has to do with the topic either. I doubt if someone lands a quad in the SP it’s going to very much effect how they would otherwise perform had they done a triple instead.
Well, quads take forever to set up. Lots of men have this problem too where they set up their quad using 10 seconds of aimless skating (in which I believe there should be a GOE penalty for that, but ISU doesn't seem to care). I don't think artistry is the main issue with women doing quads in the short.