For my main thoughts on this matter, refer to this comment. I'll only mention what's different from this source to the other:
"We are more transparent than many players in this industry who have used public content to train their models and products," Meta said.
"Since some people kill puppies, just kicking one is totally fine" moral reasoning might perhaps give you some breach in countries following Saxon tribal law, but not in countries following Roman civil law. In those, what matters is the law, not how the relevant organs handled other similar cases.
The law in this case being the LGPD (Lei Geral de Proteção de Dados - Data Protection General Law). If it's found that Meta's activities violate the LGPD, well, cry me a river, "I dun unrurrstand, Google does it worse, I'm so confusion..." won't save Meta's skin.