These ones need spiritual instruction just like everyone else. But they do not need anyone to validate their anointing.
وَلٰكِنَّ ٱلْمَسْحَةَ مِنْهُ هِيَ حَقٌّ وَلَيْسَتْ كَذِبًا ،‏ وَهِيَ تُعَلِّمُكُمْ عَنْ كُلِّ شَيْءٍ .‏