Since almost no shoes are actually made in the USA anymore, if your feet are accustomed to anything, its the lasts of CHINESE shoes.
But I question your basic premise, which seems to be implying that the shape of Argentine feet is somehow different from my cornfed Amurrican feet.
They are not.
Feet are feet.
I have bought numerous pairs of shoes in Argentina over the last 4 years. They fit exactly like chinese made american shoes. Which is to say, some better than others, depending on quality of manufacture.
I particularly like the Patagonia brand that was sold in a store in San Telmo- They have a couple of branches right on Defensa- zippy, modern looking shoes, quite well made. I generally buy on sale, in the 300 peso range. Have had at least two pairs of these for 3 years now, and they are dress shoes, I dont wear them everyday, but they are holding up just fine.
I also have gotten some cool shoes at Mancini, in Palermo, again from the sale rack- I just hate paying full retail- but again, good quality, great style.
You can get any type of shoe you want here- from high end shoes with all leather soles, to the exact same synthetic soles featured in chinese shoes, to a million styles of chuck taylor knockoffs. Even polo boots. So if you dont want leather soles, dont buy em.
Of course, style is totally subjective, and personal. But there is nothing odd or different about argentine shoes.
My teenager likes the $40 peso pairs of slip on Vans style shoes made here- he destroys $60 to $100 US bought shoes in a few months, and the Argentine shoes last him about the same as real Vans do, at a quarter the price.
And my wife is probably up to well over a dozen pairs, which she wears the hell out of- particularly some of the high fashion leather flats with sneaker soles, which look good but wear like a running shoe.
Your mileage, of course, may vary, and no doubt a good half dozen "everything made in Argentina is shit" comments will quickly follow.