Why volume is not always an indicator of value

As you can see in XMRBTC the volume has been increasing steadily over the years, (possibly fake volume), this leads people to the conclusion that a lot of buyers are present when in reality price is steadily declining and care should be taken when choosing to invest. My conclusion is that volume has little to no correlation to price action, and analysis should be made using various other TI (linear regression, Fibonacci zones for example). First educational post feedback is nice.