You are missing a major problem. Not "secrecy will kill progress" That is, in this context, a lesser problem. The major problem is that scientific secrecy would eventually kill the planet.

In a context of ongoing research and use of any discipline, Dangerous techniques must be published, or they will be duplicated over and over again, until they cause major damage. If the toxicity of Dimethylmercury was a secret, chemical laboratories and entire college campuses dying slowly, horrifically and painfully would be regular occurrences. No scientific work is done without a context, and so all discoveries will happen again. If you do not flag any landmines you spot , someone not-quite-as-sharp will eventually reach the same territory and step on them. If you find a technique you consider a threat to the world, it is now your problem to deal with, and secrecy is never going to be a sufficient response, but is instead merely an abdication of moral responsibility onto the next person to get there.