MarketProfile is about trading on market generated info.
The video explains how simple things like a vwap of a series or the POC ( highest volume point of a bar) can help and keep you head of the other participants in the market and give your trading an additional edge.
Price is an advertising mechanism
Volume is the measure of Trade
All prices are not equal and every price point has it’s own characteristics.
If you want to trade with real purpose then you have to look beyond Price and understand Volume well.
Volume will tell you infinitely more on what price is doing.