So you recognised as a parent that it wasn't something that should be climbed on, but decided because there wasn't a sign or because there wasn't other playgrounds that it was fine?
I would never ever say this to you in real life, so feel free to dismiss this as gutless anonymous internet trolling (which in may ways it is), but that's not a brilliant display of parenting. I can almost garuentee that if you weren't there, you too would be denouncing the quality of parenting and posting eye roll reactions on Facebook. If your account is genuine, I'm sure you're actually a great mum, and a wonderful person, but I can't really get away from this being a parenting issue rather than a DW issue.
Again, keep in mind that there is no way in hell I'd say any of this in person, and a good rule of thumb is to ignore people who talk shit on the internet. It's why I don't go on twitter 😊