No, everyone is not just riding off the high of a season ending. People thought the season 5 ending was underwhelming and I remember season 4's finale was even disliked by many on GAF due how rushed Don marrying Megan felt.
Season 4's finale was very underwhelming. It was dynamite through "The Suitcase", but the momentum kinda fizzled out during Lucky Strike episodes. Oh don't get me wrong, Mad Men was at the top of it's game with an absolutely dazzling array of episodes, but they were slightly worse.
Now, we have this truly incredible season, possibly better than anything else in the history of TV. Season 3's finale had shown us just how stunning and mind blowing final episodes can be. Expectations were high, but after it aired, well, it was just there. The episode felt completely out of place, was... weird, featured a pretty ridiculous twist and wasted Don's
first decent relationship in the entire series. It was infuriating.
Since i'm in the mood for great Mad Men episode endings, the season 5 ending with Nancy Sinatra singing "You only live twice" is also in my top-list. Absolutely love how don just turn and looks at her and SCENE.
So good
"The Phantom" might have been a boring finale to the weakest season of Mad Men, but this scene, THIS SCENE. I think this scene might just be my favorite scene of the whole run. I rewatched just this scene countless times over the last year.
The song choice, the way it's shot, it's stunning. It's beautiful and still gives me chills. And the moment Don just sits at the bar, lights a cigarettes and orders an Old Fashioned... it was an amazing scene after the season of Don trying to be a family man. Terrific scene man, terrific.