It appears you are right. Conifers and other gymnosperms are totally outside the definition of fruit and cannot have fruit by definition. The seed cone is however an analog of a fruit for the gymnosperms. It doesn’t have to do with petals however. Lots of flowering plants don’t have petals. Example are these wheat flowers. You have to cut up the plant to even see the flower.
You are supposed to never have any other god before the Christian god at any moment. That means that if you pray to the Christian god every day of the year except for one day where you suddenly pray to another. Then during that day you put another god before the Christian god. Think of it like cheating in a relationship. Even if you are exclusive to your partner 99% of the time that 1% still counts as cheating.