Hi
From what I see it comes down to the difference between intercepting and preventing. From my take on it Benzema does not go towards the GK or the ball just parallel. I would say more an interception so no foul for me.
Anyway I do not see any major outcry that Liverpool was done an injustice here. Most see the action as a howler by Karius rather than an uncalled clear offence. Something that you would see in an indoor five a side game rather than a CL final
If this had been a clear foul there would have been media uproar including social media. Instead both goalkeeping incidents were seen by most as mistakes by Karius. Yeah a ref could call an offence here yet it would have caused a significant fuss. I think the only ones debating this is referees who might see some possible offence in it. Anyone that I spoke to never mentioned foul just Karius' mistakes. Benzema should not have got within an ass's roar of the ball here yet he is able to stick out a leg 2/3 yards away and score a goal!
If we ask the following questions
Did Benzema challenge the GK?
Did Benzema restrict the GKs movement?
Did he interfere with the release of the ball?
Was any of the action dangerous or pose any risk to the GK?
All no for me.
All I saw was that Benzema guessed the path of the ball, stuck out a leg some 2 yards away and the ball hit him.