They probably do not have that high concentration on seeds itself. The problem is that it thousands of tons need to be dispersed on the environment and its effect as an antibiotic on big scale.
We have a very important microbiota that are bacteria themselves. The antibiotics on meat and environment can break havoc there, specially for people that work or live near those environments and can breathe or drink the pesticides.
Our digestive tracts aren’t fond of detergents either, and Roundup contains some. For that matter, so do the pods you use in your dishwasher, which is something that just came onto my radar recently. Are HE dishwashers removing enough detergent residue during the rinse cycle? Possibly not.
I haven't seen the data or reporting on glyphosate residues. Without clear, unbiased proof of safety following the precautionary principle, there is no assurances that this shit is safe to eat.
Also, yes, industrial meat ag is bad for creating new pandemics between human workers<->livestock animals packed together in CAFOs<->wildlife, antibiotic resistance (antibiotics injected to make animals grow faster), and climate change. Sometimes animal rights people tout animal cruelty, but few people are convinced because the cognitive dissonance "forcefield" is too strong to accept this idea. Adapting a quote by Upton Sinclair: "It's difficult to get someone to understand something when their tastebuds and drone-delivered fast food depends on their not understanding it." Probably a whole other area for discussion. :]
We have a very important microbiota that are bacteria themselves. The antibiotics on meat and environment can break havoc there, specially for people that work or live near those environments and can breathe or drink the pesticides.