More effective, I think, would be a site that lets a relative upload some photos and matches them via facial recognition to data on her son, if available.
This could also help Ukraine fend off later accusations of violating the Geneva Convention, which says governments must protect POWs from “insults and public curiosity." https://www.washingtonpost.com/technology/2022/03/03/telegram-russian-war-dead-ukraine-pows/
[1] https://www.theverge.com/2020/5/12/21255870/facebook-content-moderator-settlement-scola-ptsd-mental-health