And most of it was pretty terrible compared to todays high quality images. The stuff that we see now from the modern cameras of birds, animals, fashion, landscapes etc would blast the previous images that you talk about into the weeds. The point is not so much that you may be able to get decent images with yesteryears cameras, just that it can be done so much easier and most importantly, it performs when you want it to and will rarely if ever let you down. That cannot be said for the old film style cameras. There is no doubting this fact.
I think you're mixing up two basically different styles to photography. There are those photos that do not need high quality technical results to make them work, mainly just relying on light, composition and subject matter/story. Henri Cartier Bresson would not care much about the camera he uses but he wouldn't need to with the photos he takes and the effect he wants to portray. However, there are those photos that most certainly do require high quality technical aspects to them, where resolution, colour accuracy, high ISO noise quality etc is of paramount importance, like I mentioned, birding, animals, fashion, landscapes etc. This is where the current crop of cameras excel. This cannot be disputed and this is what DXO Mark et al are about. The point is, if you have the hi res super fast focusing camera of today, it is easier to make the photo retro look by adding vignetting and adding noise or going B&W than it is by using a manually focusing camera and trying to sharpen up a blurry shot or removing the noise, or changing ISO mid-shoot, or whatever.Note, I'm agreeing with the consensus here, just saying that in the grand scheme of things I believe a score to be pretty insignificant. A full frame sensor and L glass has sure made my life easier on the technical side, but capture the imagination of your audience and they don't care one iota if there's a bit of vignetting out wide. In fact, it's ironic that with today's fantastic optics people will add vignetting or an out of date film effect. Again, I'm not saying I don't like them, just observing the irony.