I am that parent at the playground. The one who watches from the sidelines, sometimes looks at her phone, and doesn't tell her toddler off for climbing up the slide.
Years of parenting and playground visits with a huge variety of ages and stages has made me find other battles to fight.
I see the concentration on her face as she tries new things.
And the joy when she makes it to the top again, without sliding all the way to the bottom.
And I seem to remember from high school human development class that it's good for gross motor skills, and using muscles that don't often get used (including problem solving, when trying to figure out how to keep going up, instead of sliding down)
But I promise, if you're at the park with us, we're respectful of other people, and she knows to go down, and take turns (unlike some kids we run into)