Having trouble following your point here. The man was looking for things that will work with the suede shoes he selected. You're saying he shouldn't wear a more casual suit because you think not enough other people are wearing casual suits?
You've been shopping (and maybe living) in the wrong place, man. Corduroy, cotton and wool flannel suits are even available from such mainstream sources as LL Bean and Lands' End and J. Crew. Have been for years.
You don't have to listen to me, because I never wear a tie. Someone more knowledgeable than I should step in here. But my personal take is that one looks like it's the one tie belonging to an IT guy and he bought it at Sears.