IIRC no in the real world cared about the left sided mounting of the drive.
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.