Internal conversations about you does not qualify as personal data. The data was not collected from you and you did not have to consent to have them talking about you.
It's a weak, absurd argument. The key part is about data that is collected from the person by the data processor.
To repeat: a conversation of two people with their opinion of sircastor is not information about you. It's not like people could only emit their opinion if you consented to it, and you are not the one taking this report from a third-party and giving to the company interviewing you.
