Indeed it was a sentence that perhaps deserved few extra words of explanation... But just like you did, I also had to grasp this concept backwards "the hard way", as I have been no less than any other a victim of the "uselessly fast lens" propaganda.
I completely agree with your opinion about the f:1,4 Takumar, and I'm persuaded that it's no coincidence. About other f:1,4 lenses that I've tried during the "faster & faster" war, some were just barely usable lenses, others gave nice results wide open but pretty much to detriment of sharpness at all apertures.
To complicate things, in the eighties the market was flooded with cheapish moderately fast lenses (ranging from f:2 to f:1,7 generally) which were horribly muddy or absolutely unimpressive when used wide open, and nothing to write home about even at smaller apertures, thus distorting any comparison between slower and faster lenses which were then on the market. The exception to the above are superb lenses like the Nikkor 50mm f:1,8 which in my opinion surpasses in many aspects the f:1,4 but costs a fraction of it.
While I reckon that a fast lens helps with focusing aids on a SLR (which is thus an application in which preferring fast lenses does make sense, at least to some degree), whichever lens with an aperture of at least f:3,5 is easily usable and should be considered. What actually deflected my attention from maximum aperture and conveyed it to other parameters was the step-up to medium and later large format, where I immediately saw that such race for the highest aperture never existed, and found out later that the most regarded lenses have actually moderate to small maximum aperture figures.