On the topic of pressure, there is simply no way you'll play for Barcelona and not have a lot of pressure. It's like playing for Madrid and expecting not to have pressure. The fact that you are a teenager doesn't change that. There was pressure on all the young players of Barcelona who made it through the ranks, so it's nothing new.
Barcelona didn't spoil Fati's career; injuries did.
It's funny how it's not even Barcelona that is hyping Yamal, but the whole football world. People are watching and seeing what the kid can do, its only normal for them to be amazed.