Unequivocally a shoe lover. For me, one dress + 14 pairs of shoes = 14 different outfits. But something has been niggling me about certain styles of shoes we've been seeing a lot of and I've finally found a definition for it! Thanks to the following quote from Tom & Lorenzo and their "fabulous and opinionated" critique of fashion and style.
"Let's all light candles and pray for the end of 20-lb. shoes of anger. We're tired of starlets walking the red carpet looking like they have bear traps on their feet."
Bear traps.

GRRRR!!!
Extreme bear traps!
Seriously angry shoes.

Not angry shoes.

Grouchy, clomp-clomp horses hooves.
(And not because of the wedge heel. Wedges are great!)

Happy, walking-on-air shoes.

I don't think it's a color issue because, look! Nude bear traps!

And I don't think it's a strap issue, because I wouldn't call these angry shoes. Nor bear traps. (Would you?)
It seems to be more the "weight" of the shoe - both visually and literally speaking. A shoe could be made of neoprene and technically weigh nothing but still look heavy and hoof-like on the foot.

And a final note... just in case you were thinking it.
Lightening up in the footwear department doesn't mean it's acceptable to wear flip-flops everywhere. That trend (thankfully!) died over a decade ago.
Save these for the backyard and beach.