I don’t know. Is this about a particular philosopher / situation? I’m not good at things-being-implied.
I don’t think it is necessary for any philosopher to be studied by anybody. Can ideas be divorced from their creators? Sometimes they become divorced through poor recordkeeping or intention (not wanting to face a bad bit of personal history of the creator). Does discovery of bad life history of a creator of an idea mean they should be rejected henceforth? Many times, probably so. I don’t know if this is referencing a particular philosopher and I missed the reference or not.