So in a park in Austria named Area 47 there's a water slide that is "men-only". According to the park, the reason has nothing to do with sexism, it's because it has a history of causing vaginal injuries, and so people with a vagina (or, in their words, "women"), cannot slide down it safely, and therefore they are not allowed to.

While I'm sure that this was legitimately their reasoning, here's the thing - that actually *is* an issue of sexism. Because why wasn't the design safety-tested against this when it was built? They're almost certainly using a testing methodology that doesn't take into account anatomy differences. That's *exactly* the sort of problem you get from systemic sexism (and it mirrors how eg. medical testing procedures often work).