I'm gonna invite you to a game called the Pepsi challenge, wherein you're obliged to imbibe a glass full of unknown chemical X and survive 24 hours before you spray it on food that other people eat and/or insert it directly into the foodchain. Wanna play?
It's not scare tactics to be careful with food specifically and the ecosystem in general. You see, we now have the science to actually do experiments and test things for safety before industry belches out thousands or millions of tons of the stuff into the foodchain, whereas 100 years ago we did not. IMO it is actually irresponsible to not do so. What we lack is the political will, and default positions like yours are not helpful.
In my very honest opinion, 100% serious--I think it's entirely reasonable to require proof of safety before society grants you permission to inject your newly designed chemicals into the food chain.