This stands out as the single worst thing I've ever seen on their site: https://arstechnica.com/tech-policy/2017/11/this-is-why-ill-...
Summary: Author whines about customer support experiences and makes an ass of themselves, then realizes that all their griping wasn't even necessary because if they had performed some basic troubleshooting they would have realized the problem was elsewhere all along.
As for Pornhubs viewership, I don't think it will go down much. I imagine a large part of their audience just goes to the site and clicks on what looks good to them, maybe filtering by category or searching, but still, they see what's there and they click.
Also in a roundabout way, since now everything on the site is either from their parent company, a partner company, or someone in their model program they are in control of all revenue and are more probably more likely to see people pay for content from their model program members, which they get a cut of.