Anyone that uses Flash needlessly is no web designer. I don't care if you had a thousand people involved, Flash just gets in the way 99.9% of the time.
This may come as a huge shock to you, but there are lots of people who don't use Flash or have it enabled in their browser, or who have accessibility issues (like vision impairment). All Flash does is prevent these people ("customers") from using your site. That's brilliant.