Your first responsibility is to protect your children from external threats, if you give them all the privacy in the world you won't be able to do that, so you need to somehow know what they're doing which means either an internet blocker or little privacy, both of which I'm fine with.
For kids as small as yours the internet would not even be a choice if they were my kids
For kids as small as yours the internet would not even be a choice if they were my kids