I suspect it’s more just that it doesn’t “fit“ the way all the other machines were, it stands out and not in an impressive way. It just sort of increases the otherness.
I agree the stuff about being harder for right hand is probably just made up after the fact as color commentary.
I've never heard that complaint mentioned before, so that article is the first I've heard of it.
My anecdata is working at Apple and Apple Dealers in the mid 90s to 2001.
But then not many of them got sold in my sphere IIRC. We were selling 8600s and then G3s into Ad Agencies etc.. at that point.