Idol Worship

ਸਤਿ ਸ਼੍ਰੀ ਅਕਾਲ
I have a question that concerns me and has been bothering me for a while now.
As we all know, the ਗੁਰਬਾਣੀ makes it very clear that the Divine is beyond any physical form and true devotion comes from an inwards remembrance of God, rather than from external acts. Basically just meditating and connecting with the formless, true reality which would leave no room for worship that centres on physicality.

ਕੋਟਿ ਤੇਤੀਸਾ ਦੇਵਤੇ ਸਣੁ ਇੰਦ੍ਰੈ ਜਾਸੀ ॥
ਸਿਮ੍ਰਿਤਿ ਸਾਸਤ੍ਰ ਬੇਦ ਚਾਰਿ ਖਟੁ ਦਰਸ ਸਮਾਸੀ ॥
ਪੋਥੀ ਪੰਡਿਤ ਗੀਤ ਕਵਿਤ ਕਵਤੇ ਭੀ ਜਾਸੀ ॥
ਅੰਗ 1100 | ਸਤਿਗੁਰੂ ਗੁਰੂ ਅਰਜਨ ਦੇਵ ਜੀ

However, I always wonder about the way we treat the Guru Granth Sahib. We place it on a throne, cover it in royalty, fan it with a ਚੌਰ, use the word ਅੰਗ (limb) instead of ਪੰਨਾ to refer to the pages, we bow before it, strict protocols are followed around it, and so on. I do understand that as well as a Sikh scripture, we believe it to be a living Guru as it contains all the answers. But something about this doesn't sit right with me.
Since it is considered an eternal Guru, how is this differentiated from idol worship? I would appreciate a deeper religious perspective on this matter; I acknowledge that my understanding may be incomplete and there might be aspects I haven't fully considered.