Hi, I remember the story of a window.
If 10 people stand at a window and watch the outer world, they may find different visuals, beauty, or things.
Yes, every individual will have a different opinion. I agree with you that priests do the Shakthi Sthapana into the idol.
But, as per Thaithariya Upanishad, it says the way to Salvation is in Krutha Yuga through Daiva Drusti, in Thretha Yuga through Tapassakthi, in Dwapar Yuga through Yagna, and finally, Kaliyuga is through Mantra Patanam.
So, to pray to God with at least concentration and to have some respect, we have idol worship. It also says that Rishis, who have seen God through spiritual sight, made the idol for all to pray.
And finally, in the Vedas, they clearly stated, "Nirvikalpo nirakaro, nirguno, Shudha devo yeko Narayanaha," meaning God doesn't have anything that a physical object has.
Thank you, Ram. It was nice to remember all this after a long time.