Nah, that's just so there isn't any build-up to Winterfell knowing the Wall's been fucked. Because if Bran wasn't warging, everyone would be chilling in Winterfell and then there's just a million dead guys out of nowhere. He'll probably announce it in an autistic way though to some like guy who cleans out the shitters. I mean, yeah, I get they're trying to pass him off as ' so connected, so disconnected', but you know, an ice lich riding an undead lich dragon shooting ice flame at a million fucking foot wall doesn't happen often in history, so give Mr. Autisim a little bit of urgency on that one.
The Wildlings are continuing to be this shows bitch though, they're all fucking dead by the end of Episode 1 of Season 8. How Tormund is going to survive this one is going to be another wacky adventure. Also lol Wall is already down and Cerci thinking that those mercs are actually going to be used on anything living and that the entire fucking North isn't just going to pull a 'FALL BACK' to the South.
I look forward to the episode where she goes, 'No, of course I didn't betray you, I bought these guys to fight this massive army of the dead that my retarded ass thinks is easy to beat, what, did you think I was fucking retarded?' *Gives look to Jaime who just facepalms*
Though if they make this some time travel story, deus ex machina bullshit, I am done with the show.
The fan theory is that the White Walkers had a truce with the first men, in that the first men didn't build the wall to keep the White Walkers out, they built the wall to keep Men from going IN. Like, the wall was the line of Demarcation and shit. And that because the White Walkers live forever, they always remembered, but men don't live long so they forgot, so all the Wildlings were invalidating the truce.
Then this ends up with Jon having to become the new Night King because they gotta reforge the truce. Or something. Basically fatty was going to end it with no one being happy and Jon is going to be a White Walker forever and Dany is prolly going to go insane and burn shit again and the whole thing didn't matter because South Korea forgot Undead North Korea existed and then Undead North Korea got pissed because a bunch of Homeless South Koreans invaded its terf.