How much of what was shown in this tech demo do you think is facilitated primarily by the PS5's SSD bandwidth, and do you believe this tech demo could run on slower SSD's without any changes?
The issue is that unless a game is exclusive to PS5, it will still be beholden to a slower lowest common denominator SSD on other platforms, past-gen, PC or otherwise.
I don't know, because I didn't make the game. As is usually the case, unless you can actually sit down with the assets and pipeline, it is hard to say for sure. I can wager a guess that this is extremely intensive on data stream. Yeah, I get that you could be taking the cynical route and saying that Epic were paid to say such-and-such, but they were singing the praises of the incredible PS5 drive. And, at least from what I can see on paper, so am I. Sony basically said "we don't want a half measure on drive speed" and it shows.