A part of me wonders if they re-shot the ending scene so that him going back and changing things, then flashpoint happening, causes Supergirl to 'occur' on Earth 1? It also gives them a chance to redo or reboot any screw ups that fans have complained about on Arrow.
The term 'fans' cracks me up.
Those people aren't fans, they're the whiniest nerds in the history of the internet, sort of people who make watching/commenting on these shows utterly insufferable because they get so salty every episode at the most minimal of details. Like I get criticising a show, I don't get people who seriously think Arrow is anywhere close to being the worst show on television. Like how small is your experience of TV that you think that is in any conceivable way true?
Not to mention how the anger at Felicity is flat out creepy as fuck. Like genuinely makes me concerned for certain people's mental states/attitudes to women.