as it allows people to avoid the tax by limiting spending
Indeed. Poor people just shouldn't bother spending their money – if they can't afford the increase in VAT.
And with all that money they've saved by not spending it, they will soon become rich.
It all makes perfect sense, in fact, it sounds like basic Reaganomics to me.
As does the suggestion that "limiting spending" is a really good idea for an economy just coming out of recession.