Bracing shock towers?

Ok..... My $0.02 will probably light some girlyman's hormones on fire but WTF..... Why do I see and hear all this about flex concern when alot of you are leaving off the factory fender to firewall braces that Ma Mopar provided you from the factory? I'll still use them on my 452 Six Pack Duster with fenderwell headers and they clear what needs clearing and must do some good..... No frame machine checks or pothole stories just a few 1.80 60 ft times and lots of fun on the street.... Everybody's car is gonna be a little different depending on rust or how well the spot welds were placed from the factory and other custom mods... I think we can all agree though that just leaving naked frame rails hanging out with no subconnectors or other braces is asking for a failure of some kind.

my cars 60 foot is 1.64 (so far with drag radials) & hasnt had failure of any kind