What you are talking about is not the same as what OP is talking about. Following the analogy, it’s not like you should stop using shovels (or knives, or water) because someone bad used them (hell, Hitler was a dog lover, and I’ll be damned if I stop loving dogs because of that asshole). Rather, it’s that you shouldn’t just use the shovel you know murdered someone because the person murdered didn’t matter to you. Stepping out of the analogy, it’s not about the tool used (though the case could be made for some things) but about the companies who made them and how they used them or knowingly allowed them to be used.