There is a very important, and possibly intentional, confusion happening in this quote: "Monsanto's claim that Roundup herbicide and its active ingredient glyphosate don't cause cancer"
Notice that it's Roundup *and its active ingredient glyphosate". But what else is in Roundup other than its active ingredient? This is the critical point: it's all the other additive shit that goes into Roundup that is the most damaging to people.
Glyphosate, by itself, has not been found to be carcinogenic to humans. It's been studdied massively by many different international bodies for decades. Please read up on this page (https://en.wikipedia.org/wiki/Glyphosate) and try to understand the difference between Roundup and the ingredient Glyphosate. They are not the same thing. Since the patent on Glyphosate expired, it (and not Roundup) is used cheaply across the globe to increase food yields in poor and rich countries.
More importantly, the alternative to Glyphosate are pesticides that are *absolutely more harmful* to humans and the environment. Glyphosate is by far the least harmful, most effective pesticide we have. And before you insist we all stop using pesticides, consider that the cost of food is only as *cheap and plentiful* as it is now because of pesticides (and chemical fertilizers). We are now entirely dependent on the yields they produce, for everything from all our food to the international trades on crops, even entire economies, which other economies are dependent on.. The impact on the globe from abruptly stopping their use would be catastrophic.
Roundup may indeed be carcinogenic to humans, and should be studied more closely. But don't confuse that with Glyphosate the ingredient in Roundup.