Absolute rubbish. That is obviously a number identifying the item. I wish a lot of URLs would be shorter, but that's different. I also offer this piece of evidence:
https://news.ycombinator.com/item?id=7678729
People are intelligent. They can learn and see things if you give them a chance, and you're basically advocating for keeping them stupid and unknowing by hiding things from them... why?
Even if you know what it means, it's still not suitable for reading. If you saw that in search results, how will you decide if you prefer ?id=7678729 or ?id=22107823 ? They're not even sequential. You can't remember it from something you've seen before.
Yes keep them stupid and hide things from them. That's an important part of how computers became popular. A lot of people were excluded in the days of command line everything.
There's another comment here which sums up my thoughts on this perfectly: "Don't make me think" has turned into "Don't let me think", and that is a disturbingly dangerous direction for freedom from corporate/government control.
Society would be very different today if, several hundred years ago, the "ruling elite" decided that literacy should be discouraged.
Even if you have a lot of pages, you can still make a readable URL, like The New York Times "https://www.nytimes.com/2020/01/22/style/modern-love-podcast.... None of that except perhaps "https://" and ".html" are mysterious computer codes.