I think the scienst's are playing God
Scientists have been "playing God" for thousands of years. Each generation seems to have its folks who use this type of fear to resist change. I would argue that the exploration, discovery and advancement of science is a very good thing.
10,000 years ago (give or take) a scientist took a phenominon that occured from time to time in nature. He learned to start this phenomina, harness it, control it. He used it to cook with and to get heat.
They were "playing God" since before this time, fire was caused and controled only by God. The story of Prometheus (who was punished by the gods for 'stealing' fire) illustrates this nicely.
They said the same thing when scientists started planting crops and cultivating land. Up to this point people foraged the food that God gave them. Planting crops and tilling land means that you, not God, control what plants grow and where they grow. And yes, there were those who resisted this form of playing God.
Electricity allows us to turn night into day.
Medicines cure diseases that used to leave people at the mercy of God. We now can keep people alive that, under the providence of God, used to die.
I think this fear of "playing God" is overrated. If there is a God then She gave us a mind and the desire to advance. Humans have been using science to improve their lives for millenia.
I don't see why we should stop now.