I disagree with your notion. Like I mentioned before I am member of many hobby forums and have been for over 15 years. Some of hobbies that require significantly more disposable income that have many more members that purchase online all the time. Nothing like this has ever come up. Ever. Not once.This incident is extremely run-of-the-mill based on your being a member of this forum and owning a credit card. This is a homebrewing forum, that means that there is a high percentage of people (~100%) on the forum who shop at homebrew stores. If a homebrew store's data or processing company gets compromised, then a high percentage of forum members will be affected.
Nothing strange at all about that.
I'm not saying this is world shaking stuff going on. I just believe that comparisons to petty credit card theft are daft.