Of course there is, they are different things. But, the argument was that quality is only a matter of preference. Easily proved to be false, hopefully discarded, and now we can actually look at things without that canard floating about and differentiate what counts for quality and what counts for preference.
You mean when assessing quality? Are you amused that because it argues against the position that quality is only preference/opinion, or something else?
I can look at a game, and without any regard to my preference, evaluate if it's mechanics and features achieve the goal the game sets out to do. I can, without regard to preference, evaluate the grammar and spelling of the text to determine if the editing was of quality. I can, without regard to preference, analysis how the rules are laid out -- are related rules placed conveniently, or do I have to flip between pages to find them. I can analyze the rules to see how and what authorities are granted and how those interact -- is it coherent, does it fight itself? These things are not preferences, but I will absolutely bring my preferences in after this analysis to see if I want to run this game. I find that FATE is a high quality game, and I don't want to run it. My dislike for some things doesn't mean I need to call the game low quality.
And, ultimately, this is what the "quality as subjective opinion" argument leads to. If my subjective opinion of a game (ie, do I like it) is that I do not, then, according to what you've explicitly said, it is of low quality. You caveat this with 'for that individual' but then have also talked about quality as a consensus or generally determine status. You can't have it both ways -- you can't say quality is in the eye of the beholder and claim 5e must be of good quality because so many people like it. Like logically can't, obviously you're more than capable of actually saying this.