What is the ruling on those who excuse the worshippers of graves due to their ignorance?

Question:
Who says that the worshippers of graves are Muslims because they are ignorant and they constantly repeat the testimony of faith?

Answer:
They are ignorant, yet the Qur'an is recited to them and they hear it, and it contains warnings against shirk (associating partners with Allah) and threats for shirk, and it rules that the mushrik (one who associates partners with Allah) is eternally in the Fire. And it is said they are ignorant, yet the proof has been established against them. The proof has been established against them by what reached them of the Qur'an . If the Qur'an reaches a person, the proof is established against him. Yes, and these are apparent matters in which one is not excused by ignorance; they are apparent, and the Qur'an is clear regarding them. Ignorance is an excuse for matters that require explanation and for hidden matters. There are hidden matters and matters in which there is doubt between them, which many people do not know; these are the doubtful, hidden matters. As for the apparent and clear matters, there is no ambiguity in them. Yes, and is there anything clearer than the prohibition of shirk and the warning against it? There is nothing clearer than that, and the ruling regarding its people. Yes.