They occur in around 80% of Asians, and 80% to 85% of Native American infants. Approximately 90% of Polynesians and Micronesians are born with slate grey nevus, as are about 46% of children in Latin America, where they are associated with non-European descent. These spots also appear on 5–10% of babies of full Caucasian descent. African American babies have slate grey nevus at a frequencies of 90% to 96%.
People still take nsfw as the point of the tag, since they scroll at work. Which, that’s kinda on them if you ask me, but the nsfw tag is a courtesy originally intended for people at work so they could avoid rings that may cause issues in that setting, rather than specifically for sexual images.