1. I have had them subtly mess with websites I am working on and I probably wasted multiple hours troubleshooting an issue that wasn't an issue
2. I have had them break a web form when I was trying to purchase something
3. I have purchased some things I like from ads and wouldn't have discovered otherwise
4. I don't frequent websites that overuse them or I can't work around them
5. I'm on a work laptop sometimes and I'm not allowed to use them for corp security reasons
6. I'm not sure I trust the ad blockers themselves, their developers, or their own app security
7. It's another process that can slow down viewing a webpage
I guess.. just like how wearing a seatbelt could end up killing you. Doesn't mean the exact opposite isn't a million times more likely.
If your website is going to be used by people with an adblocker, discovering that an adblocker unintentionally breaks your website is a feature of using one, not a bug.
I have had financial websites impacted by adblockers, which is why I stopped using them. (I do not work on all of the teams building the financial websites I use.)
The main point is you were writing advice to someone as if they were building the website, when most of us are not generally building the sites we use.
Yes, because I was responding to a quote of them talking about building websites.
I could download some browser with adblocking built-in from the appstore but then I wouldn't have access to all my bookmarks and everything from chrome.