As a totally honest point, I feel that it speaks to how well the show resonates with the demographic on a whole. I'm tired of being snarky about the show, or make jabs at how I watch even if I dislike it, etc, because really, I don't. Hatewatch is bullshit. Do I think parts of the show are dumb and flawed? Sure. Are the characters unrealistic? Duh. Is the scenario somewhat implausible? Yeah totally. Is it fucking entertaining? Yup. Does the gameplay stuff tickle my gamer bone? Yes yes yes. Are the production values good? Definitely. Is the actual narrative somewhat engaging albeit predictable? I think so, yes.
Wanting to invest time and energy into poking holes into something also shows an investment and interest in it. Sometimes that does not indicate an actual interest in the subject matter, like for example the toilets in Accel World Ep1. That simply showed
how bored we were on a weekend that we are somewhat invested in good consistent background art, and when something looks really off it catches our attention and outrage.
But in this case, we are really going out of the way to argue how plausible the scenario in SAO is, and what holes there are in the story and trying to patch them up or dismiss them. This kinda shows that there is something compelling about the way the narrative is approached, and that either consciously or subconsciously, we wish that it is tighter and more perfect, so we can like it even more.
That's my take on it anyway.