It is not really trustworthy for us! What ppl are thinking is usually the opposite to what they are doing! Espally when ppl heavily invested in it, they would have no clear mind to make the right decision.
Well, yes, on a forum where everyone is basically saying the opposite of what they're actually doing...
But as far as I can see, this chart on IG is showing what their traders are actually betting on - putting their money where their mouth is.
Read what it says:
75% of IG client accounts with open positions in this market expect the price to rise
I.e. their clients actually hold an open position.