Can I ask you, why does FB login bother you/make you feel like they are violating basic privacy? Somebody creates a disposable HN account to question somebody

Can I ask you, why does FB login bother you/make you feel like they are violating basic privacy? Somebody creates a disposable HN account to question somebody else's privacy concerns? No irony there. Anyway, everything Facebook does violates basic privacy en route to productizing you. User data is their entire business model.