So it is not a choice between “this chemical” or “that chemical” and many view that kind of thinking as the real problem. In this way the GMOs that you describe support that problematic kind of thinking.
That said, I am not familiar with what you describe. Which chemicals did not break down and how did GMOs allow us to use chemicals that do break down? I’d like to learn about that. Thank you!
https://allianceforscience.cornell.edu/blog/2020/07/new-stud...
https://enveurope.springeropen.com/articles/10.1186/s12302-0...
> Growing reliance on the broad-spectrum herbicide glyphosate has triggered the spread of tolerant and resistant weeds in the U.S. and globally [5–10]. To combat weeds less sensitive to glyphosate, farmers typically increase glyphosate application rates and spray more often [11–13]. In addition, next-generation herbicide-tolerant crops are, or will soon be on the market genetically engineered to withstand the application of additional herbicides (up to over a dozen), including herbicides posing greater ecological, crop damage, and human health risks (e.g., 2,4-D and dicamba) [6].