Of course, checking every configuration is impossible, and no DRM checking system is perfect, so always the chance for false positives. Was mostly responding to the blanket assumption people were making that Blizzard was targeting Linux/WINE specifically as a cheat, when that's not true, and they appear to be at least acknowledging the existence of Linux players, and performing some testing.
Bolstering your point, There were some cases in the past where Blizzard banned people from WoW for "unauthorized program use" only to discover, later, they were innocuous (handicap access programs, an anti virus program in another case) and eventually unbanned the players.
While I can understand them wanting to go after botters, and the negative effects they can have on gameplay, kinda wish you could play around with some automation, as would be a fun coding challenge (have had to do a fair amount of automation coding in my jobs before)