The underlined words are untrue. VAT replaced a purchase tax and net revenues to the UK government were largely unaffected by the change. VAT allows businesses to export without having to pay UK sales taxes on those exports. It also prevents UK consumers remitting tax to foreign exchequers, which is what happens if you rely on sales taxes.
A lack of even basic understanding of the thing that's being demonised seems to be a common pattern through this whole saga. VAT, the European Commission, the Lisbon Treaty, the EHCR - you name it, the brexity-lads are agin' it, but ask them to explain what "it" is, and it's a short pause before we no information, just nonsense about "overlords", "juntas" or other words that would actually better describe the inbred clique of Old Etonians that actually runs the United Kingdom.
But back on the OP... just one outcome of Brexit, that:
a. is actually likely to happen
b. will improve the life of a typical middle-to-low earning married man or woman.
Just one concrete thing. Come on - it cannot be that hard to name one.