It's easier to do a transcendent synthesis of something contained inside yourself.
That's why absorbing disconfirming evidence, steelmanning others' positions, leaning into your contradictions is the way to finding game-changing ideas.
Take them in yourself and allow the synthesis to blossom.
Instead of seeing a team member sharing disconfirming evidence as a "they" that you want to figure out how to deal with, see them as a "we" that needs to absorb the idea to synthesize the right thing out of it.