This is the sort of gem you just can't seem to get out of modern internet. 2000-2012 Internet was really something special. I'm sure there are videos out there explaining the lore behind 'I feel fantastic', but I sort of like to keep the mystery open in my mind. Nowadays people enjoy ARG, but I can't get into them, they feel too fake to me. They feel 'over written'. The amount of lore that goes behind these projects just detaches me from the immersion I'm supposed to get from them, because of how much they rely on narrative, I can't escape the feeling that it is fiction and not the 'alternative reality' the narrative game is promising me. I'm not suggesting these are bad by any means. I just can't get into them.
Back to I Feel Fantastic, what I love about it is how displaced it feels from any context. It makes it unknown, and as the common cliche goes, we fear what we can't understand. If someone tried this nowadays, it would take a few weeks for people to figure out the source of the android, or there would be huge background lore explaining every frame of the video and how it relates to some philosophical concept or whatever. I suspect out there there's the answer to the reason for the video, but because of the nature of the pre-2015 internet, it took long enough to figure out for organic, fan-made lore to be built around the video. I can't think of any recent examples of such a phenomenon, perhaps something like the Backrooms could be close, but it feels over-produced, even if that product was organic.
Lol, I'm sounding like a nostalgist. I'm just saying I don't think we'll see anything similar to early internet creepy videos.