If you don't want your children to watch porn you are supposed to subscribe to a service which keeps lists of websites which offer or are believed to offer porn

If you don't want your children to watch porn you are supposed to subscribe to a service which keeps lists of websites which offer or are believed to offer porn and block them in your router, without your ISP or the government's involvement. These services have existed for a long time, but it looks like the governments want to get involved for surveillance purposes. It is your router which is supposed to be doing that, not your ISP. What you are essentially doing is giving the government and the ISP an excuse to monitor the your interests and communications and those of your family, which they would in any case, only in this instance you have given them your explicit permission.