DinoInDisguise
A russian spy disguised as a t-rex.
I'd have to buy your premise to answer the question.
Again, this requires accepting your definition of "mere opinion".
Definition of opinion because it keeps coming up in this thread for some reason.
"a view or judgment formed about something, not necessarily based on fact or knowledge."
You are not forced to agree with me. But my "premise" is firmly rooted in the definitions of the words used, as expressed in other comments. I'm not arguing something radical here, just that the popularity and player retention are the only evidence we have, and everything else is, by definition, opinion. The definition of evidence is this;
"the available body of facts or information indicating whether a belief or proposition is true or valid"
Assertions that better consistency is objectively better game design is an opinion, not fact. Assertions that better balance is objectively better game design is an opinion, not fact. And the list goes on. Every assertion relating to 5e's game design, that I have seen in this thread, is very much an opinion. No evidence has been provided except the popularity and player retention in support of either side.
So maybe we, here in this thread, operate under different definitions than Oxford. But as the English language is normally used, your choices are popularity, player retention, and opinion. So when you dismiss the first two, you are solely discussing the last one. Which, in all other fields of science and law, is worse than mediocre circumstantial evidence.
So the original question remains. If we dismiss popularity and player retention as "worthless" evidence wise, does that mean we are just going to rely solely on conjecture?