Many people don't care for the Windsor; on the other hand, others do and someone liked it enough to have the style replicated. So one man's shit is another man's shinola. . . or something like that.
Regarding the curve of the wingtip, that rule of thumb might be so - but isn't this style more commonly referred to as a U-tip and not a wingtip? Isn't it sufficiently different from a wingtip to make that rule of thumb somwhat irrelevant here? The rule of thumb for avocados equates softness with ripeness, but is that applicable to rhubarb?
In any event, I get your overall point - you dont like the style.