'hi-'fi' is a short way of writing High Fidelity. High Fidelity means 'a high degree of faithfulness or accuracy to the original. The original for our purposes is the source, i.e. the cd or lp. I am just pointing out the obvious, that a stereo system reproduces the information on a cd at a much higher 'fi' than a turntable and tonearm does with a lp. the lp: noise, gouges, clicks and pops, limited freq response etc... with the cd. Flat 20-20, lots of dynamic range and no distorion or noise, that any human can hear. Wanna try the same argument with tube amps?
There are three main root causes for name calling 1. you have exhausted your vocabulary 2. a lack of upbringing 3. you have lost the debate. come on now, fess up, which applies to you guys.
btw: fidelity has nothing to do with personal preferences.