Certainly not outraged over the use of 'guys' use as a plural noun other than i think YeOldTiger raised a valid point concerning his family members...Nothing wrong with at all plain and simple . People use it all the time , women use it , men use it , lol people just like to get outraged over anything these days .
Like i previously posted personally i think it's casual/lazy thinking in this day and age...and i sympathize with YeOldTiger's post!