Yes, if the 'Bizarre' had known right from the start that everyone was coming to confront it, there would have been no need for it to go to all this trouble, wasting energy to create such a large-scale battle scene.
Their past encounters weren't free from conflict. On the contrary, they had failed to defeat the Bizarre before. Comparing then with now, the Bizarre could only have grown stronger. Even knowing that they had brought Feng Yi from another dimension to fight against it, it wouldn't be foolish enough to rely on false bravado. After all, since it understood their intentions, it would naturally understand the kind of resolve driving this team—a resolve to face death head-on.
From this, it can be deduced that initially the Bizarre was unaware of their arrival on this planet, and the magnetic aura they sensed was absolutely Feng Yi himself.
