It cites a number of studies. In particular, https://pubs.acs.org/doi/10.1021/tx1001749 ("Glyphosate-Based Herbicides Produce Teratogenic Effects on Vertebrates by Impairing Retinoic Acid Signaling") and https://www.sciencedirect.com/science/article/pii/S0300483X0... ("Glyphosate-based herbicides are toxic and endocrine disruptors in human cell lines")
I don't even know what you're talking about with Samsel and Seneff. And I can't view your link.
From the Chemical Research in Toxicology article: "A reporter gene assay revealed that GBH treatment increased endogenous retinoic acid (RA) activity in Xenopus embryos and cotreatment with a RA antagonist rescued the teratogenic effects of the GBH. Therefore, we conclude that the phenotypes produced by GBH are mainly a consequence of the increase of endogenous retinoid activity. This is consistent with the decrease of Sonic hedgehog (Shh) signaling from the embryonic dorsal midline, with the inhibition of otx2 expression and with the disruption of cephalic neural crest development."
From the Toxicology article: "First, we observed a human cell endocrine disruption from 0.5 ppm on the androgen receptor in MDA-MB453-kb2 cells for the most active formulation (R400), then from 2 ppm the transcriptional activities on both estrogen receptors were also inhibited on HepG2. Aromatase transcription and activity were disrupted from 10 ppm. Cytotoxic effects started at 10 ppm with Alamar Blue assay (the most sensitive), and DNA damages at 5 ppm."
From that samsel paper, figure 3 is the most damning to me as it's closer to my field so I know more about it. The reason why thyroid cancer incidence is rising is mostly that ultrasound is increasingly used for diagnosis which gives you power to detect smaller tumors that you'd otherwise miss and not diagnose as thyroid cancer.
The authors know that this paper is crap, that's why they published it in a predatory journal. There are lots of x that are rising at the same time as y and it's very easy to ignore context and make a correlation. Depression is rising while smoking is falling; you want a cigarette?
Read this damning critic on samsel and seneff: https://www-ncbi-nlm-nih-gov.proxy.lib.ohio-state.edu/pmc/ar...
"Dr. Seneff has already predicted that by the year 2025, half of the children will be afflicted with autism from glyphosate poisoning." Half of all kids in 2025 will be autistic, right from the horse's mouth, does that seem reasonable to you?