I'd say your comparison is a bit flawed for a few reasons. I also have set of those stubby sockets, and they are a specialty socket, specifically designed to have the lowest profile possible - so it stands to reason that the chamfer would be reduced to achieve the lowest overall profile possible. Also, it's an impact socket - it's not really fair to compare a chrome socket to an impact socket, as they're literally made from different metals, with different coatings, for different purposes.
Chamfer is a convenience feature, and like anything else, if taken to the extreme it can become detrimental. I wouldn't say that "for most people the extra grip does not worth the loss of convenience," I'd say that for most people the extra grip is not worth the loss of
money," as Snap-on sockets are stupidly expensive. I only have a few Snap-on sockets that I bought for specific reasons - that 24mm I showed earlier is one I bought specifically for Toyota rear differentials. The drain plug bolt only has about 3mm to grab onto, and is inside a ring circling the plug that won't allow for the thickness of an impact socket. I bought the Snap-on because it was the thinnest socket with the lowest amount of lead-in chamfer I could find, and it's worked perfectly.
I get what you're saying, there's a lot of baseless Snap-on worshipping here, but I wouldn't call this discussion "blind admiration." We're not talking about the magical-special-unique-unicorn metal that Snap-on sockets are supposedly made from, we're talking about one specific feature that many of us see a big advantage from. If that's of no value to you, that's fine - there's a million different style sockets to buy. For me there is a difference, as that image of the rounded bolt that
@Tools4Me posted earlier was my picture, taken of a 12mm bolt that my Gearwrench sockets rounded off because they couldn't fully engage the bolt and slipped off.
I personally have been replacing my Gearwrench sockets with Icon sockets as sales come up. The sizing, features, price, and ease of warranty of those sockets won me over. They have a smaller lead-in chamfer much like the Snap-on sockets, which is something I've been seeking out.