@drumpowa  
Very big goof, indeed. XD

Funny enough, she says she was caught in a time travel loop like she couldn’t get out. However, it’s actually a self imposed loop since she could have stopped but if she did it was automatically game over.

Don’t forget the part immediately after.
 
“…and honestly, it was the strangest thing that’s ever happened to me!”  
(sees Sci-Twi)  
“Make that the second strangest.”
 
And when you watch the finale, it finally clicks: she never did meet an alternate Twilight in any of those other timelines. This is her first time meeting a Twilight Sparkle who isn’t her. (The one from next Tuesday doesn’t count; that was still her, just a few days later.)

And Starlight’s trollface confirms it!

Wait, people didn’t catch that before? I thought that it was pretty obvious.

Yeahwell, everyone by that time already knew that finale’s gonna be some timetravel business, so you’re being kinda slowpoke.

Ugh, Thanks, Josh Haber.(Ironically, he also wrote the finale)

yaa the season got deleted, Friendship games would have been latter the same day of the final.

well i knew that before episode aired.

I don’t think it was intentional.
 
Most likely Friendship Games was supposed to air AFTER the Season 5 finale, but the mid-season break just messed things up timing wise.