@Nrdsb4 -
To quote you, “In your scenario, the kids haven’t put their DNA on the site, but somehow are being connected to your DH. Here, both parties have voluntarily submitted their profiles to a web site that is explicitly there to generate matches of only those who have submitted their profiles.” I didn’t see anywhere that DeAngelo had “voluntarily submitted” his profile to the GEDMatch site. If he did, in fact, put his profile up of his own volition, then there is no potential issue. Do you have a source for that information?