“…perhaps there is an antithesis to anthropomorphising Allah in the hadith of the Hidden Treasure, which happens to be the favourite of this artefact/human self and its Nafs.”
My point was not Allah making Anthropomorphising statements about ITSelf (HimSelf) e.g. the Hidden Treasure hadith, but about we Anthropomorphising Allah!
What you referred to is the other way around, indeed Allah does Tajalli (Lucent Manifestation) any which Allah likes to e.g. Allah spoke to Moses through the Manifestation of a burning tree.
Allah calls ITSelf The Light emitting from a lantern from an alcove. Allah calls ITSelf Al-Ala or Lofty High in altitude.
Wrong thoughts are those when we Anthropomorphise Allah by projecting our personal feelings and judgements, specially about others.