No, I agree.
From a practical point of view, some temple flaps help with the transition from worn hair to natural hair.
If you look at the black & white picture, its quite hard to know the best positioning for a piece without the flaps.
An alternative to flaps is to grow the hair longer at the sides and brush it forward.

I think its more common to see guys with less hair on top, yet good temples than it is to see thinning temples and thick hair on top.
It can look unflattering on anyone, wig or no wig.

Saying that, I'll resist temple flaps for as long as I can.
To me its just more work & glue!
For now I'll stick to dying the faint hairs that are still there.
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UPDATE: I just wanted to add that all my comments about temple flaps were general ones and in no way about Yah27 specifically.