I might sound jaded, but: isn't this happening constantly anyway? Usually with just a small bit of "fig-leaf" credibility (like the aforementioned "shot on iPhone" pieces, but especially supertiny illegible disclaimers) - but the effect is the same.

I mean, watch this ad: https://www.youtube.com/watch?v=wDjGnWO_fG4

Can you spot the "screen image simulated" lines? Would you even have noticed it, had you not been looking for it?