It's only been recently in the past few weeks with #Amethyst but some big profiles like nostr:nprofile1qqsw4v882mfjhq9u63j08kzyhqzqxqc8tgf740p4nxnk9jdv02u37ncpz4mhxue69uhhyetvv9uju6mpd4czuumfw3jsz9nhwden5te0wfjkccte9ec8y6tdv9kzumn9wsq3yamnwvaz7tmsw4e8qmr9wpskwtn9wvql3tqm show up as the randomly generated robots with no PFP lately