Yes, unlike the writing staff of FMA BroHood, Kawahara can actually write logical arc endings that are grounded in reality.
Except for:
- Nearly instant rehab after being in a coma for two years
- A huge game company not being pressured into helping police investigations after people supposedly get killed in their game, merely because it was an overseas company or something along those lines
- A guy who trapped people and forced them to play his little death game, but everybody brushes off that part and are just glad he gave super VR to the masses after everything's done
- The major antagonists for two arcs being characterized as rapist psychos to make them "evil"
- The first arc's ending being about how the super special beta tester was chosen at random by the game admin to become his rival with a unique super skill, and somehow managing to live after death or something to beat the admin in spite of his cheats
- The second arc's ending being about the rapist antagonist abusing his admin powers, only the MC gets superadmin powers because of the crazy admin from the first arc, and wins merely because of that
I find that calling SAO entertaining or fun is acceptable, but calling its arc endings logical and grounded in reality is a bit of a stretch when they mostly amount to a boatload of deus ex machinas only meant to make our super special snowflake MC look good.
...While I'd discuss how I loathe gary stus all day, I think a more "fair" complaint of mine with the show was about the absurd disproportion of character agency that Kirito got compared to the rest of the cast, since I really like watching characters develop and having them become little more than accesories to the plot was really sad. It's like they all ceased having their own goals and desires after they met Kirito, even if they were shown as strong and reliable characters such as Asuna (who thankfully gets a whole arc to herself later) and Sinon.
Mother's Rosario was indeed the highlight of the show for me because of that, since it managed to keep Kirito away from the spotlight for the most part (except when it really mattered, sadly). SAO always felt like the kind of show where I'd have been happy to get a couple one-shot episodes about the adventures of the side characters without directly involving Kirito, since they all felt awfully underdeveloped unless they happened to be the main heroines of any given major arc.