The article just refers to dark allegations and invites you to read the complaint for yourself. Not sure if they are just lazy or the allegations are not something they want on their site for some reason. I don't have the time to read a 40 page complaint ATM, so I don't know.
Factual allegations are from page 6 to page 22. The reason they link to the full case instead of quoting "juicy parts" is that's a one-sided complaint, where the standard for it to continue is more likely than not, and proof is not required at this stage.
This is how the reporting should be done to be honest. But Verge quality has been going down lately, so it's possible they are just lazy instead of being ethical.