If one has only ever used modern forged steel spanners, then one might think that they aren't this width, and have the jaws at an angle. But try looking at antique tools. There have been a lot of spanners over the past couple of centuries that have looked like the picture.
If I saw a spanner like this in real life, I'd be thinking first half 20th century, possibly from a motorcycling kit, and Imperial and useless. (-:
I was surprised when the article originally leaped to the insane conclusion that someone who created a stylized software icon with (what may not even be) a less-than-perfectly-accurate depiction of a wrench has never used one, but I’m not surprised to see this kind of doubling down on the absurdity from the HN comment section.
As it stands, both the old and the new icons depict handles at 0 degrees, and the old ones depict octagonal open wrenches and not hexagonal ones.
I think it's a mistake to pick apart the wrench icon, but if you're going to make a major issue out of it, at least be exhaustive and consistent in your criticism.