I guess that is a part of the motivation for growing our own.
I'm not a fan of glyphosate, or Monsanto but there seems an element of alternative truth in the article.
If glyphosate is the only impurity, worst case scenario is that the OJ is 99.9999974% pure.
Europe has the more conservative Allowable Daily Intake of glyphosate at 0.3 mg per day. The EPA permits more than 5 times that dose. Three pounds of oranges would have about 40 micrograms of glyphospate at the higher contamination levels. That is less than one tenth of the ADI. A large glass (2 cups) of OJ would have about a third of that - 12 mg max. It is hard to figure why the article baulks at those kinds of doses
per year.
I think there is a real cause to be concerned about glyphospate based more on its pervasiveness, growing use in many crops and potential contamination of water supplies. Loads of food crops are treated with glyphosate and there is a growing trend to use it in crops such as wheat
simply to make harvesting easier. Individual foods may be within acceptable contamination levels but contamination of multiple food sources may take daily intake above acceptable level. There is also concern that
current acceptable daily intake levels are way too high, based on research since those levels were set.