Welcome to the community! I hope we can help explain what happened. Memorial benches are frequently accepted in error, but this clarification shows that they are not eligible unless for a significant member of the community.
I think the not “Distinct” rejection was trying to tell you “This is just a bench.” I don’t know what other rejection reasons were used, but unless you can present evidence of this person’s significance to the community, I would not try to resubmit or appeal.