Daily Mail has 51 adverts on their home screen, including playing video.
A really good test site ( http://bidace.com/150.html ) shows 119 adverts blocked.
My towns newspaper website is riddled and unreadable if you don't have an ad block. You've either won a survey or sent off to a different site. The survey one stops you looking at content.
There needs to be a code of conduct as some sites (even on 4G) are slow to load on mobile.
Max 3-4 adverts, no auto play etc...