It's one thing to disagree about the usability issues with Flash, but it's apparent that these particular designers, IMHO, are very aware of what the customers need.
Hillman Curtis, Eric Jordan, Brendan Dawes and Joshua Davis are all aware of what customers need. That would explain why they have designed for some of the largest companies in the world.
I guess it all depends on what the particular project requires and using the right tools to complete it. In many cases the right tool is Flash.
<aside> My contribution for "clever" flash use would be choppingblock.com </aside>