Sure, sounding better is technically an opinion, take any number of people and play the same thing for them on cd and vinyl and they will (in my own experience anyway) say the vinyl sounds better. So at what point does that become trustworthy?
At no point. A set of the same opinion is still an opinion.
Also, you basically said that if cds were built better, they’d be better. Wow, what visionary.
I said that if the same amount of material was applied, the CDs would be better in all aspects. Now they are just better in most aspects.