Not everyone keeps their lives private. Even in the old days, people have published memoirs, zines, pamphlets, whatever. This isn't strange. Everyone wants their 15 minutes of fame, or in some cases, people chase the fame or fortune they perceive influencers have. Meta feeds on this psychologically. It doesn't help that students, farmers, union labourors, etc. don't trust their future is bright...
The point is, dismissing this as technical illiteracy downplays the research into the dark patterns that Meta employees to extract this info from users... As the charge suggests, Meta gets these photos “without obtaining specific consent and without properly informing them”.