Imho, most of us on this subreddit have a lightly developed critical vocabulary and because of that a vague sense of our own taste, usually put forward in terms of examples, MALs. (Also successful things are usually harder to describe than unsuccessful things because everything works together to form a unified whole rather than things sticking out.)

A lot of us will point to "storytelling" as the strength of a show, but will be unable to disentangle the different aspects of storytelling and point to exactly what we like and how.

For example, for one person good storytelling might be storytelling that is character driven, which is to say that the character's internal conflicts, their personality traits, and the decisions that flow out of these things are what the show focuses on and relies on to generate interest. There can, however, be a lot of different kinds of character driven plots. Is the plot primarily one that describes the character, their background, their personality, what it really feels like to be them at their time in that time of their life? Maybe instead it is more exploratory, taking a bunch of different kinds of characters and putting them together and seeing how they react and showing how different personalities work that way. Maybe it's based on development, or even it is moralistic, dealing with an inner conflict, a set of defining decisions, and what they lead to.

The fun of a forum is teasing all this stuff out though, trying to bring people around to appeal, as well as lots of joking and stuff.