xG is great when used correctly. For some reason some fans are really sceptical of it, but the fact is that it's a big part of football at the top level, and the best way to analyse what kind of chances a team creates/of what quality they are. It's very useful for showing when fans say a miss was a 'sitter' when really the analytics show it was a hard chance.
Here's Tuchel (probably one of the most progressive, most analytical coaches in football history) referencing it:
Klopp has done the same before, and there's another clip where Wenger discusses it. Most clubs use this stuff now, seems to be a dirty term on here for some reason, football fans need to catch up!
Still prefer to go with my own eyes. If I say someone has missed what I believe is a sitter, xG can suck my nutsack.