The amusing thing about this argument is that the same people who poke fun at Jović here were just as pissed off Alcacer hadn't been given more time.
As per most cases of a young striker, they don't tend to hit the ground running without a conscious time investment. Take Jesus at City - played great to start with, waned off with people sounding off 'Aguero is so much better' and has now become a starter. The most Jović got is 3 starts in a row in Jan 2020 and 2 starts this autumn. There is literally no sample size to say categorically he failed. People have doubts in saying Hazard failed and he played x times more minutes. What did he fail to do? Score a goal from the bench when coming on? I feel like this is the only thing everyone would rate in those conditions, because they expect him to do something in 5 Benzema didn't for 85 in a given game. Ridiculous standard for an unpolished player. Of course he showed next to sodall. What should he show when he plays 5 mins per game on average?
I would argue he has serious glimpses of quality when there is a true hint fair rotation is on the cards. He played very well vs Osasuna in Sep 2019 where he had a goal waived off. He played very well vs Betis this autumn where he caused Emerson to get sent off. The backheels to set up a Bale goal vs Villarreal and another spring to mind. There is enough to think talent and proactiveness is there. But it needs time. All well and good to argue 'well he's not going to get it at Madrid'. Which is a piss poor justification considering players like Asensio get the time despite playing shit until they finally do have a good stretch of games and Rodrygo and Vazquez both outperforming him in the meantime.
As for Benzema, Jović is younger and will be better. Benzema will not and is only as good as a fat finished Suarez. Bunch of people will claim he's a team player, he's this, he's that, does far more than scoring goals... Look at what this current squad (which will not change until Mbappe turns up) needs -> it needs a direct striker, someone who consistently looks to break the line and doesn't come down to get the ball just to pretend he's involved and creates openings for others.
Spot a Madrid player: