I somehow have the feeling this is a hoax.
Anyway: I'm not quite sure I would eat it. From my first intuition I would say no, because d'uh.
But looking at this from a rational standpoint, in terms of chemistry there's only a minor difference to normal steaks. Today's biochemical methods allow to extract the needed proteins without carrying over, what's "disgusting" (or better: poisonous) about feces. (like bacteria etc.)
And as a (weak) defense of this: many things in (bio-)pharmacy as well as in the food industry aren't realy less disgusting. E.g. many things used as food additives are synthesized in E.coli (fecal bacteria).
And the shown method has clearly the advantage of using a numerous resource wich would otherwise just be waste.
IMO it is great to have the chance of meat supply without the need of animal factory farming. Not that it will become completely obsolete, but why not using a chance to reduce it.
Still: I don't know I would eat it, but I think I'd give it a shot. If it is true.
Anyway, I somehow don't see a chance it will get comon. If people know what it is, most would never buy it. And selling it without that info would be kinda lame to. So I'm quite sure it will fail on the market.
But maybe we will remember this, as the world hunger won't become any less of a problem with increasing population. And meat is as inefficient as it get's in terms of kilokalories per hectar farming land.
Hopefully there will be found a way to grow meat as cell culture.
Edit:
[...]
without carrying over, what's "disgusting" (or better: poisonous) about feces. (like bacteria etc.)
[...]
I mean of course living bacteria and their possible toxines, since the burger is made out of bacterial protein.