Imo MGS4 relies way too much on callbacks and memberberries, even if it was meant to finish the main storylines. Not to mention that the storytelling felt like it was trying to come off as overly profound and over the top. It was just like watching one of my Japanese animes.
I did enjoy replaying the first two acts, especially the gameplay surrounding the ongoing battles, and how you can choose to influence them or to ignore and avoid them. It is pretty baffling how that part of the gameplay is completely dropped after Act 2.
After that, it just feels like going from A to B, with maybe a bossfight here and there, and SO. MANY. HOURS. OF. CUTSCENES. INBETWEEN.
Ultimately, I did like some things about it, but for the most part I did not like it enough to give it a thumbs up.
One time, CE triggered me so hard with their objectively wrong opinions that I accidentally punched myself in the balls.