If they were "pros" then they would be able to solve their UI problem. I run Win8 at work and at home. I rarely see the start screen unless I want to. Just like I rarely actually ever used the start menu on Win7. I use a variety UI add-ons for a better experience (for me).
Apple: presents new UI that is a grid of buttons. Response "OMG! Sooo innovative. Where do I sign up for a chance to suck Steve Jobs dick?"
MSFT: presents new UI that is a grid of rectangles. Response "OMG! How r I use kumputar!??!?!?ONE DERP!!!!"
lol pretty much. You learn a few tricks and you're golden with windows 8. Thing is people aren't willing to learn a few new, quick tricks and would rather complain instead. Productivity is more about learning than complaining boys and girls. It surprises me how people get through life sometimes.