I never considered Vinicius to be a top striker. So far he is an average striker. Vinicius does not have the ability to score a lot. He has played in 6 matches this season in La Liga with Madrid, scoring just two goals. He scored just 10 goals in 33 games last season. A team like Madrid needs a more experienced striker than Vini.
Bellingham scored 8 goals in 8 games. Bellingham's presence was quite visible in every match. Madrid's overall performance is very stable as a result of consistently outperforming Bellingham. And the team is slowly becoming dependent on Bellingham's performance. However, if Kross, Modric and Bellingham can maintain their consistency, Real Madrid will be able to retain the top spot in the table.
Vinicius has very good quality, which is very valuable in a striker, he is able to keep the opponent's defense in suspense, thereby drawing some of the players towards himself. Of course, the forward must score goals, but also, Vinicius does a lot of work with the ball and gives assists. Now he has become a very important player for Real Madrid, and after Benzema left, this became even more important for the team. Bellinge and Joselu also fit into the team perfectly.
Vinicius Jr. is very talented and a quality player, I won't argue with that. I know he is a great player. But the problem is that he is not a regular scorer. Madrid need a regular scorer like Benzema or Ronaldo. Players like Vini or Rodrygo cannot fill Benzema's void. They are talented but it is foolish to expect too many goals from them. And they are not able to consistently play well in every match.
Madrid need a regular scorer like Haaland or Ronaldo. Or Madrid could also try to bring Osimhen into the team. I would say that Madrid management should add one of these three players to the squad in the next transfer window.