What do advertising-required websites like business insider look like with pi hole? Do they still allow browsing? With ad block on opera for example I am forbidden from browsing with a "it looks like you're using an ad blocker" page.
I actually don't use the pi-hole on my device because I don't run ad supported apps and I use FireFox with uBlock Origin to browse. It's mostly to keep my 4yo for getting blasted with app ads, he doesn't browse. So it's great for that purpose but note that it doesn't work on YouTube ads, they do something that makes it impossible (without also blocking YouTube).
I know you can add exceptions through the admin page but it's a bit tedious. If I did use it on my own devices, I would never add exceptions. In fact, if a site like that comes up too much in my general browsing, and I find myself accidentally visiting it, I add them to a custom plugin I have that removes links to them from any page. For example, I never see links to facebook, instagram, twitter, linkedin, forbes, wsj. Anything popular with a pay, sign-up, or anti-adblocker wall. I've done it for years now and I don't miss any of the sites I've added.