As he points out closure and happy are two very different things.
All you see in the current ending is crewmates magically teleporting to the Normandy which is currently in the relay system for some reason. Then survive being pulled out of ftl (according to codex this causes ships to be ripped apart) then survive crash landing on a random planet with Joker being fine even with brittle bone disease.
That's without going into the rest of the ending which I won't go into again here, as while opinion on it is divided I really can't stand for many reasons highlighted in that blog.