From the standpoint of international competition, the Great Firewall isn't such a bad thing. Wasn't it Sun Tzu himself who said, "When your enemy is making a mistake, don't interfere?"

But research (ideally) benefits us all, so we'd be making a mistake of our own to adopt such a provincial attitude. The Chinese scientific community is not our "enemy." It's a shame the Great Firewall can't be worked around as easily as sci-hub worked around Elsevier and other artificial roadblocks to scientific communication.