Now that's just silly. Olympus optics were top-notch. Many of them perform better than their Japanese contemporaries, and are still well regarded today. And some of the smallest lenses are the best performers. They never cheapened their lens line with plastic like canon, Nikon, Minolta, or Pentax did. In fact they made slight improvement s over the years, like multi coating, CRC, or design changes. (Only a few design changes really)
The Olympus bodies were designed to very high specs. The shutter was tested for 100000 cycles.
Oh. One comment about the canon FD redesign. They are quite rugged in fact. But internally they did some whacky things to change the breech-lock mount to the bayonet.
And what is this beef against small? You do realize that leica and contax rf lenses were considered the best in the world at the time. And the Pentax screw mounts, of similar vintage to the Nikon f, were tiny in comparison. and leica s are still topping the charts while being tiny little things? So small doesn't mean inferior in any way.
The one point I will agree with you is in regarding hard knocks. The thinner barrels and body plates on the Olympus are understandably more prone to being bent than the thicker Nikon's .