Wow, Real Madrid managed to win big with a score of 6-0 and what is even more surprising is that Benzema was able to score a hat-trick in the first half even in less than 10 minutes. As an old or senior player getting an achievement like this is of course still a good achievement, and it doesn't matter even if the opponent he faces is only a team that is in the lower zone.
So indeed, Real Madrid is in fact still in good performance this season. But yes, Real Madrid is only unable to compete with Barcelona which can indeed be more consistent in La Liga, so even though there is still a chance, it will still be difficult for Real Madrid to overtake Barcelona.
Even if Real Madrid is able to score 6 goals or more in La Liga, it will not affect the chances as long as Barcelona are consistent with their performances. Barcelona are still 12 points ahead of Real Madrid until week 27, that's something that's hard to forget. But yes, the win like this indicates that Real Madrid is a good team even though they have lost many opportunities to win the La Liga title this season.
Benzema's goal statistics then came into the spotlight, he began to compete with Lewandowski for the top scorer this season.