... ~340 out of ~580 errors in a century period for a single issue were all generated by the same person ... who does not appear to be importing via Gedcom ... and who has over 30,000 contributions.
(And, my suggestions report of ~150 issues across ~700 adopted profiles unrelated to me was an issue for someone recently ... )
Yes, I've contacted the PM. (Left a message on the bulletin board for one of their profiles asking them to check their Suggestions Report.) May follow up on their personal profile or with private message in due time if I remember. (And my adoptees have ~80 suggestions now.)
Carry on! We all have a generous amount of "volunteer security"!