I don't quite get the "GDPR requires you to share with someone the personal details of people who happened to visit a webpage that you setup on a free website" angle here. I don't get how that's your data and not the data of the people who visited the page? That seems to violate the GDPR more than the current state, no? If I accidentally click on your profile you're entitled to my name and employer and that's your da…
(copied from my earlier comment) I think it's very close to C-579/21 which was about audit logs. In that one CJEU ruled that audit logs are personal data of you and the person who performed the action. They did allow censoring the person's name in that case (and exact timestamp), but given that in this case LI is selling this information to same person then "protecting others" rings pretty hollow.