Absolutely, if so many scientists are raising concerns it tells how serious the risks are. It’s not good to pause exciting research, but it is necessary to understand the dangers first. Thank you 

Imyourfed

science

‘Unprecedented risk’ to life on Earth: call for halt on mirror microbe research

south_korea_ln

We're on the same page here...

And given the document in Science has been signed by a lot of scientists, it likely means the danger is real as they are going against their innate scientific curiosity with such stance.