Neil Young had a whole album that made allegations about GMOs that were not backed up scientifically.
A link from MSNBC :
https://www.msnbc.com/msnbc/neil-young-gmo-monsanto-msna6499...
A link from MSNBC :
https://www.msnbc.com/msnbc/neil-young-gmo-monsanto-msna6499...
The burden of proof lies on the side deploying self-replicating novel agents into the environment.