Orwell is not the bible, or an if-by-whiskey politician. Everybody reads him differently because they're combining hearsay, random quotes and attributions.
If you read Orwell's essays or articles directly, he's extremely clear and unambiguous. The fact that people think Orwell agrees with them despite having polar opposite views is a testament to people's laziness, not Orwell's interpretability.
On capitalism as a belief system, Orwell was a critic. Not because of freedom, or lack thereof... but because he thought capitalist politics didn't offer enough hope. I can't find the quote but somewhere he goes into Socialist, Communist & even Fascist promises of a better future. Capitalism offered a very modest amount of hope on a very long timeline. Conservatism offered none, which is why (according to Orwell) Fascism succeeded it.