What has Network Neutrality got to do with this
As I understand it network (non-)neutrality is mainly about ISPs giving preferential or poorer treatment to certain content providers, regardless of what their subscribers want. I can't see how giving each individual subscriber the choice to restrict (or not ) access to specific classes of websites relates to an unavoidable restriction by the ISP. The two are quite different site selection paradigms.
Incidentally, I've been running Sky's filter for a year or so with no inconvenience ( no 'false positives' as far as I can tell ), and whilst it no doubt does not block all content in the specified classes, the alternative of putting individual shields on several PCs, Tablets and phones is impractical. If one doesn't want it then its a 30 second operation to turn it off. What is the problem ?