Maybe more than anecdotal... what I find interesting about that statement is that the recoil spring likely had very little to do with the perceived problem. Changing the weight may have only served to mask the symptom described as the ejection pattern/distance difference from one gun to another. Which brings up a thought...
People are often frustrated by 1911s because there seems to be differing standards of what is right and applicable remedies for when things are thought to be wrong. At the same time many new 1911 owners use their previous experience with other pistol platforms (fairly enough) as a measure of what should be “normal” or “correct” on a 1911 when that standard or experience is not necessarily equatable from gun to gun. It’s often just with little things such as “how hard should it be to rack the slide” or “it’s hard to release the slide using the slide stop” or “how hard should it be to seat a magazine?” or “why do my grip screws come loose?” or "how much take-up should the trigger have?"
Point being that it's important to recognize that in some aspects the 1911 is different than other pistol platforms and than can be a source of confusion or frustration for a new 1911 owner and at time we use a false equation for what is correct or how to correct something we think is wrong. As a final thought, and to use your example, I’m often asked how far the gun should eject empty brass and my answer is always the same... out of the gun. I care very little if it’s 3 feet or 6 feet or 28 feet so long as it is reliably coming out of the gun and being properly controlled by the extractor.