The quantity theory of money is trivially shown to be nonsense just by considering what happens to savings (i.e. nothing). You need to up your analysis if you want to truly understand.
Only reason this one wouldn’t be, is human sentiment being nonlinear.
You’re asking to be trapped in a small fish tank with no air pocket…still not a good argument.
Not.
Read more carefully before getting snippy, here.
Better: don’t get snippy here at all!
And savings absolutely did eventually get obliterated by excessive Covid money printing, what are you on about?
Sure, spending might cause inflationary effects, but that's orthogonal to quantity (flows not stocks), but then economics is the science of confusing stocks with flows.