Barcelona didn't have an easy job at all though. It was like they were waiting for Valencia to score to start performing better.

Lewandowski was on his very good day that he scored two goals. It is good to see him being beneficial for his team. Because he is one of top earners in the squad now. Therefore the expectations are bigger as well.
I still believe it could be his last year at Barcelona on one hand. He is 35 and has 2 years left on his contract. If he plays much extra this season then maybe the team could consider keeping him for one last year.
Against Valencia, he showed once again why he's worth every penny. Now, under Hansi Flick, Barcelona's playing a bit differently. No classic tiki-taka dominance all the time. Its more varied, more adaptable. And you know what? Lewandowski is thriving in it. Him and Yamal, they're the anchors in this new system.
Sure, its early days and there are still some kinks to work out. But grabbing those three points early on is huge. And Lewandowski, he's got that killer instinct. When the pressure's on, he delivers. But he's not getting any younger. And that contract situation... well, thats a whole other conversation. If he keeps playing like this, maybe extending him makes sense. He brings stability, and thats important during a transition like this.
On the other hand, Father Time catches up with everyone. Barcelona's got to think long-term. Its a tough call, but they need to find that balance between getting the most out of Lewandowski now and planning for the future.