You joke, but with the recent update they do have similar design aesthetics. If you're already a happy Walmart physical store customer that's perfectly OK, "familiar" is a good thing, even if it's not as attractive as you'd like.
I personally wouldn't say the design aesthetic for either is "attractive", but they're pretty clean and functional, and that is worth a lot. Walmart.com transactions are now a bit easier than Amazon, before you factor in the tremendous amount of effort the latter requires to avoid counterfeits. Walmart.com search is a lot better once you get the right terms, and turn off 3rd parties which they make trivial.