I just quote from google
All what google says is they recommend or say it is good practice to make the URLs read-friendly so that customers/users can read or use the URL as link or navigation guide.
It doesn't say one word that it will improve your SEO because of that. Google just says you should keep it organized. Another quote
Again, no mention of SEO benefit. Visitor friendly does not equal better SEO or SEO results.
Lastly, everyone can do what they want with their shop site it is their website and they should know what their customers might want. Look at Amazon, eBay or some other big shop they all have different URLs, some long, some short, some easier to read, some are super long and complicated. Important is that the "real" SEO stuff in your shop is working as it should then you'll end up getting good search results.
So what @burt said isn't wrong at all. User friendly URLs have nothing to do with SEO.
he is absolutely correct about SEO URLs. i think most people find them helpful and so do search engines to some extent