DR has not always had the best grasp on what’s happening with his character in the future. (Although sometimes he does have the best spoilers, like Mia, so it could go either way.) Let’s hope he’s just speculating about S8 and the team won’t try to do their usual thing without Felicity. I read a really good theory on Twitter yesterday and I wish I remembered who tweeted it so I could credit them. It was basically that the Monitor will come to get Oliver in the finale to prepare for Crisis by sending him to different earths to gather heroes to fight, and all the pre-crossover eps of S8 will have Oliver recruiting alt versions of Tommy, Dig (John Stewart), etc.
Maybe they’re going to treat S8 like JJ Abrams treated Felicity when the WB unexpectedly ordered 5 more episodes after he’d already wrapped it up with a bow. They had the main character time-travel back a year to change things — which I personally liked as a weird little coda to the series but lots of fans just disregard completely and consider the finale of that show to be when it was supposed to end. I could see the first 8-9 eps of S8 being treated as a weird “Oliver doing his own thing” experiment (like an extreme version of the prison arc), and the show returning to some semblance of normalcy in 9-10. Personally I’d prefer that. I don’t want to go back to a Felicity-less bunker with Oliver acting like it’s ok he’s not with her and Mia.