I would go as far as saying that the WWE/WCW/ECW Invasion angle was far better than this. There isn't a great deal of jeopardy besides some guys attacking FTR and Trent. There's no story. Forbidden Door is AEW at its worst; playing solely to the gallery of the work rate smarks with 'dream matches' the only thing used to sell the PPV as opposed to proper angles. There's so many missed opportunities and they're sleepwalking into something that should've been a lot more significant. They could've had Punk's injury come about by an NJPW attack - therefore NJPW cost AEW its World Champion. Tony Khan could've announced on Dynamite he was trying to make the deal happen and NJPW's people seem to get annoyed that Khan acted like a little excited kid by going public and trying to force their hand. Then, in a contract signing press conference (on both AEW and NJPW TV), NJPW turn the tables by negotiating some serious clauses that advantage them and maybe even Jay White kicks the shit out of Tony Khan.
There could have been lots of things done to introduce this whole Forbidden Door thing with some sort of actual heat that makes casual fans say 'holy shit, this is a big deal'. Instead it's all playing to the r/squaredcircle people, yet again, and relying on selling it to their core audience (who, let's be honest, would pay PPV prices to watch a farting contest between Okada and Page so don't really need selling to) rather than casuals.