It's really tough, because you need both.

On one hand, you do need to protect kids from the most brutal stuff out there and at first most things since you don't want to have them being wired up to insane degenerate stuff right from the womb. Brains wire themselves according to stimuli and if you allow really horrid stuff through all the time it'll wire their brains in horrid ways that arent conducive to a good and stable future.

On the other hand, someday your kids will be on their own and they'll be exposed to everything the world has to offer and if you just pretend it doesn't exist then they'll get immediate shock exposure to all of it the moment you're not there to put the blinders on, and that can have huge backlash implications as well. Look at the 21 year olds who never drank a drop of alcohol who go nuts once exposed without guard rails.

I think the key is to have a plan to slowly introduce the world in a measured and consistent way so kids have the opportunity to learn about the world but have appropriate guardrails at each stage of development ultimately culminating in the least restrictive guard rails so they're being trusted more and more leading up to the big day that they wont have any guard rails from you anymore.