I don't see how it differs from first thermonuclear bomb test or the large hadron collider. They were peeking into the unknown. After making their best judgement, of course.

The years to come will be the years of climate change. The best we can do is lower its severity a bit. Ecosystems will be straining to adapt. We can no longer hope that not doing anything to ecosystems will keep status quo. Proactive measures will be necessary. And we will be still in the dark about consequences of those measures, if we don't start doing experiments now.

Majority of people don't have sufficient knowledge to assess risks and benefits of genetically-modified-organisms-in-the-wild scenario, so it should be "Demand to tighten regulations", not "Oppose such practices".