I don't think this is real at all - there are a load things of like this on youtube.
With Melodyne, you can go into a finished mix and alter one instrument or voice.
There are countless things about where people have gone into stuff like Bohemian Rhapsody etc and made the guitar solo hideously out of tune etc.
However I don't think this is even done like that - it's just someone else.
The phrasing isn't identical (check the word 'remember') - and the 'bad' version doesn't even sound like an expensive studio mic to me.
I do think the official version is autotuned but I very much doubt she's that bad... let's not get carried away on a wave of hate.
Here she is singing live acoustically and you can hear the room ambience - a bit thin, and not great but not awful at all and with a decent schooled vibrato- a pretty genuine representation of her actual ability: