Is kissing the grave of the Prophet Shirk (association)? Is honoring the belongings of Prophet association?

Sahih al-Bukhari tells us it is NOT Shirk:
Sahih al-Bukhari Hadith: 1.373
Narrated Abu Juhaifa:I saw Allah’s Apostle in a red leather tent and I saw Bilal taking the remaining water with which the Prophet had performed ablution. I saw the people taking the utilized water impatiently and whoever got some of it rubbed it on his body and those who could not get any took the moisture from the others’ hands.Then I saw Bilal carrying an ‘Anza (a spear-headed stick) which he planted in the ground.The Prophet came out tucking up his red cloak, and led the people in prayer and offered two Rakat (facing the Ka’ba) taking ‘Anza as a Sutra for his prayer. I saw the people and animals passing in front of him beyond the ‘Anza.Sahih al-Bukhari Hadith: 7.750
Narrated Abu Juhaifa:I came to the Prophet while he was inside a red leather tent, and I saw Bilal taking the remaining water of the ablution of the Prophet, and the people were taking of that water and rubbing it on their faces; and whoever could not get anything of it, would share the moisture of the hand of his companion (and then rub it on his face).As we see, the great companions were honoring the drop of water which had touched the Prophet (S).
Sayyid Sharafuddin, a famous Shi’a scholar, went on pilgrimage to the House of Allah during the reign of King Abdul Aziz Ibn Saud. He was one of those who were invited to the King’s palace to celebrate the Eid of al- Adh’ha. When his turn came to shake the King’s hand, he presented a leather bound Qur’an to the King. The King took the Qur’an and placed it on his forehead and then kissed it.Sayyid Sharafuddin said: "O’ King! why do you kiss and glorify the cover which is made of a goat’s skin?!” The king answered: "I meant to glorify the Holy Qur’an, not the goat’s skin.”Sayyid Sharafuddin said: "Well said O’ King! We do the same when we kiss the window or the door of the Prophet’s Chamber, we know that it is made of iron, and could not harm or render a benefit, but we mean what is behind the iron and wood, we mean to respect the Messenger of Allah in the same way as you meant with the Qur’an when you kissed its goat’s skin cover.”The audience was impressed by his speech and said: "You are right.”The King was forced to allow the pilgrims to ask for blessings from the Prophet’s relics, until the order was reversed by the successor of that King.The issue is not that they are afraid of people associating others with Allah, rather, it is a political issue based on antagonizing Muslims in order to consolidate their own power and authority over Muslims, and history is the witness to what they have done.