> The irregular shape even makes them unusable for skateboarders who like to skim along surface edges.
Photo: bench that's clearly popular with skateboarders...
Skateboarding and sleeping in the park is not “anti-social.” Instead, these activities don’t make anyone any money, and might even lose money. That’s anti-commerce, not anti-social.
Public spaces that support the needs of the _entire_ public foster stronger communities than those that only support commerce for the professional class.
This should not be surprising and is not an unreasonable reaction. Consider that skating (often) involves moving fast through the space, in ways that are not easily predicted by someone who isn't themselves a skater. Practicing tricks necessarily involves making a lot of mistakes so people and boards can go flying in unexpected directions. Skating is often done by groups so there can be several people doing unpredictable things at once. And people (both skaters and others just trying to walk through the area) often have poor situational awareness. The whole thing is a recipe for accidents. And that's totally fine if it's happening in a skate park, but it's anti-social when it's happening in a normal public area that needs to support foot traffic.
None of that is related to commerce or specific to the professional class.
Edit: after looking at the pictures closely it does not look like they have been placed in such a manner that they would be so I guess the answer is no.
And yes it does make the surface longer weathering at the expense of friction.