I think this a very unsound place to start an argument. Food production is vital and has been refined over the entirety of human existence to be stable and bountiful. I think it's extremely reasonable to critique Roundup for other reasons - but if you want to blank-slate farming and go with a no-additive solution we're bringing a lot of technology and technique into question that is helpful.

While it's more difficult to formulate on the internet through brief interactions - the correct answer here is nuanced. Somethings are beneficial to farm land productivity and also beneficial to consumers by lowering prices, increasing availability to healthy food etc - and some things are not but might be highly profitable to conglomerates. We need to pick issues like this apart carefully.