I think as regards 'nothing'. Vlad is correct here. The physics nothing is a specific term and does not map onto the idea of nothing.
I'd agree that physics' nothing doesn't map onto vlad's idea of nothing, but that's more a problem for vlad than physics.
Vlad's nothing has the property (/ies) of 'not being able to become something/ being capable of stopping something coming into existence'. So according to Vlad's reasoning as it's got a property it must be a something. In addition neither vlad nor anyone else has ever provided a single shred of evidence or reasoning to show that a 'vlad nothing' did or could exist.
A physics nothing can lose be described as starting with something and taking everything possible away from it and then 'seeing' 'what's left'. This type of nothing therefore has some evidence and reasoning to back it up.
Even more crudely vlad nothing is saying 0=0=0=0=0=0
(Maths/) Physics nothing says 0=1-1=(2×3)-6=8-2^3...
So unless vlad can suddenly find some way of showing his nothing is reasonable, then I think we're entitled to ignore his pronouncements on the matter.