I dont agree it is poor catechises, A person can be told over and over and over this is the Body , Blood, Soul and Divinity of Christ, and that Christ is present in every single Tabernacle on the globe simultaneously when the Host is in the Tabernacle, and that the Priest actually requests the bread become Christ, as he is consecrated, and when the host does become the Body Blood Soul and Divinity of Christ, we are opened up to heaven,
You can tell all that to people until the cows come home. If they have no faith, or doubt, it won’t convince them.