>really don't find much data supporting the assertion that glyphosate causes cancer.

I'm far from an expert, but this being in the news has piqued my interest as well, and I haven't seen much that confirms it either:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5705608/

People hate Monsanto, and populism is rife, so the decision wasn't shocking. Amazing that Monsanto managed to sell to Bayer with these lawsuits on the horizon.