The Crisis that we have gotten was supposed to be the culmination of the future news article that The Flash has been teasing since The Flash Pilot episode. That's 5 years.
THAT article was about RF and Flash and was tied directly to The Flash's Origin Story being directly tied to his disappearance during Crisis. That Crisis article also references multiple heroes, including Oliver, surviving Crisis. The Flash is the only one who was supposed to die. According to that article. Even when the name changed on the article with the Savitar storyline, it was still all about Barry and RF and the events that led to RF deciding to go back in time to kill Nora and Barry chasing him back and thus disappearing, RF getting trapped in the past and him creating the circumstances for Barry to become The Flash... it's part of the paradoxes that The Flash comics always explore.
The Crisis that we have gotten today in 2019 doesn't look anything like that, but TPTB HAVE tied it directly to the future newspaper article about Barry disappearing. That's why after Nora died, the date on the article changed and then the Monitor showed up to push even more that yes, this Crisis is the same one teased on the Flash (hell, that The Flash built most of its story around in 5 seasons) was happening...
But it's not happening at all the way it was built up to happen.
Part of the reason this Crisis feels so rushed and so weird emotionally is because TPTB knew they were mucking stuff up by deciding to use this as Oliver's swan song, but they spent FIVE YEARS building this on The Flash and couldn't just not follow through with The Flash, so we ended up with this crappy version that failed both fandoms. It's like having a room with two focal points - it doesn't work.
I am beginning to get Game of Thrones vibes as a Flash fan. Worse than that - because I binged that show in 5 weeks and caught up to watch the finale with the world. So I wasn't as pissed as longtime fans of that show were. Now I really feel their pain. Well... 5 years of it, at least.
I actually believe GGustin was impacted by this too - he seemed rather flat in his Crisis scenes... like none of it mattered. He just felt hollow to me.