The "little bit of stuff" describes what existed before inflation.
And there it is, you are admitting that some THING existed before inflation gave rise to space/time.
As I have pointed out you don't understand anything about physics and as a result you habitually contradict yourself without realizing.
If you want to call a false vacuum a thing. Why would you do that?
Your OWN source called it "STUFF." Why would THEY do that???
All Is Lava
Because it doesn't fit into their limited view of the multiverse. Remember, this postclassical delusion was all started by Germans who had been subjected to a slavish and stifling education. When, as PhDs, they were finally allowed to think for themselves, they had never learned how to. So they went off on irrational fantasies.
Another sign on how weak their nerdy personalities were was that the answer had been discovered decades before their long-awaited evidence. But that theory had devolved into supernaturalism. These gutless creatures shied away from that answer for that reason only, instead of saying that it had started out on the right track until corrupted from a takeover by superstitionists.