I’m always weary of those kind of filters, you may forget you have it activated and not understand why something is not working like you suspect.
Although I may be more afraid of this then necessary. The only case where something remotely like this actually happened to me was working on the helpdesk of a webhosting provider when a customer asked me to help him figure out why the ads he added to his site didn’t show. Roughly 10 minutes into the phone call I figured out the ads were on the page just fine, but both our adblockers were blocking them like expected.
I used to be a huge fan of modifying my work environment to suit my needs, but there is also something to be said about keeping your set-up as close to the default as possible. It prevents confusion and compatibility issues, it allows you to start work again without as much downtime when you have to use a new or different machine and will probably also keep you more secure (adblockers will usually add security, no doubt, but installing every whimsical browser plugin is a security nightmare).
