Not that I can know 100% if they were or not, but look at that team and tell me who you actually think would have been on streoids/peds? No one was jacked. No one had just random outrageous numbers out of nowhere. Even if you want to throw out Everett, most the talk around him was far prior to 2005, and his power numbers weren't all that crazy in 05.
I don't see it when it comes to most the other players. Hell, the only guys who even hit over 20 HRs that year, besides Konerko and the aforementioned Everett, were Dye and Crede, and only Dye cracked the 25 mark. Crede maybe you can make a case that he might have been using them, but I think it would be wrong, honestly. His power numbers are fairly consistent throughout his whole career. Dye's numbers were pretty consistent in his career in the power department, also, much like Konerko's.
Not gonna lie, he's actually pretty spot-on with that. They're one of the few teams of that era that isn't mired in the whole PEDs/Steroid scandal. That's not to say NONE of them touched the stuff ever. Just that if you look at the numbers, no one stands out as an obvious user, and as far as I know, no one on that team ever tested positive for anything, or even had their name mentioned in the steroid scandal, outside of Everett.
Man was that team fun to watch. I completely forgot Scotty Pods swiped like 60 bags that year.