Q: so does it effect paid for content on A/W?
No. Only stuff that's free to view.
Or is to push credits as you can only see non-filtered images - videos with credits
Yes, probably. Although I think AW has been sort of 'encouraged' to do this due to the new rulings/laws about what minors are allowed to see on t'internet. AW's certainly taking its time fully implementing it - you still can't report people for having open pussy/creampie/hard cock shots as their main profile pic, for example.