First of all, for now, we are part of the EU, that means we as a country still get say on EU law. Indeed until Brexit we actually had a pretty damn powerful position, so it wasn't "the EU dictating policies" it was "the UK helping craft EU laws". But even then, we have a veto. So if the EU starts dictating policies we don't like, then we veto it. Indeed that was our position on the possibility of a "EU army" (I use quotes because in reality it is a lot more complicated than that) or Turkey joining the EU - they never going to happen whilst we were part of the EU if the UK didn't want them to.
Or for gods sake no it isn't. It protects the human rights of, you know, humans. You could end up being accused of something one day and then you'll be hoping to god we treat people fairly regardless of what they are accused of.