I have knelt and prayed before many altars and shrines which were decorated with statues and artwork depicting Our Lord and many Saints of the Church. At no time did it ever even occur to me that the plaster (or stained glass, or mosaic, or paint) was itself divine in any way. I’m a mechanical engineer and a computer programmer. I don’t *really *think that a chunk of plaster is God.
And, really, I think this ancient form of idolatry is pretty much extinct today. Few religions would ever look at a chunk of plaster and think it was God.
But, when I enter a Church, and the Blessed Sacrament is exposed for adoration, I fully genuflect and pray, “My Lord and my God” (John 20:28). I could never believe that a chunk of plaster is God, but I could (and do) believe that (what appears to be) a piece of bread (or a bit of wine) is truly the Body, Blood, Soul, and Divinity of Our Lord Jesus Christ.