Are playgrounds safe for a toddler?

Kids get scuffed knees, it’s part of exploring life. It’s going to happen whether it’s a playground, your back garden or school. Climbing, swinging, chasing other kids, digging things up, kids will get grazes, cuts and bruises.

Let them get messy and have fun ☺️

They’ve never been “safe” but this is beneficial for children to build up their muscles, endurance and physical fitness

There is more harm with keeping them inside than there is at a playground to be honest. They need sunlight, fresh air and exercise. It's good for them physically and mentally

They’re safer now in the sense that they’re often better maintained, have better equipment for younger kids etc.
But in the sense that kids are kids, are going to run and climb and explore, they’ve always not been ‘safe’. Kids will literally fall off anything. They won’t learn their limits and how to play safely without pushing boundaries and having some bumps and bruises!
Can’t wrap them up in cotton wool. Just have to be present, patient, and let them try things. Sounds like your husband needs a reality check.

They’re safe if the kid is properly supervised.

When my son started school nursery they encouraged us to visit the park to build up small and gross motor skills. Surely it’s more dangerous if he hasn’t built up those skills in the first place. My daughter has only been to A&E once and that was because she ran into a chair not from falling off a slide. Obviously your child should be supervised.