yet as an IT professional i spend all day long debugging all the viral extensions on IE and rarely any time with chrome.
i'm willing to bet the number of bad extensions for IE far outnumber them for chrome or firefox. frankly it's very RARE i find a virus hiding in chrome extensions (there are some out there, but i'll find those same extensions on IE so it's not platform specific)... with IE it's one of the first places i look.
some clients are well protected some aren't. unless you're going to start to claim that little old grannies that call looking to get their computer working right should even know about this stuff i'm pretty sure i'll keep running into this.