That's the situation and Joselu will at least be very useful in times of crisis. He can be a decent supersub and what he did against Bayern Munich in the Champions League means Real Madrid can win the Champions League this season. If it weren't for that, it is certain that Real Madrid would not have won its 15th title.
At least that's Real Madrid's way of appreciating Juselu's hard work because he helped Real Madrid when they had difficulties against Bayern Munich and it's true what you said. If it weren't for him, it's likely that Real Madrid wouldn't have been able to win the Champions League title for the 15th time because it was thanks to him that Real Madrid could. beat Bayern Munich and advanced to the final even though he is a second tier striker and it is possible that Carlo Anceloti will only use Juselu when he is experiencing a deadlock, he will be the player Real Madrid will need so it is not wrong if Real Madrid makes this player permanent.
Even though Real Madrid currently has a pretty good pure striker, Real Madrid also needs a backup striker to at least play against lower level clubs so Carlo Anceloti has the freedom to rotate players so he doesn't just rely on his good players, the coach can save the stamina of his great players. for more difficult matches. Even though Juselu is 34 years old, his abilities are still quite good as a striker if he plays for a normal club, even though he is not very productive, his services can still be used.