Yes, I understand why it is done. I’m not even arguing that is shouldn’t be done, that’s not my place to say. However if another group of people said “We have the body, soul and divinity of Jesus locked up in our building, and you can’t have access to him unless you go through various instructions and rituals.” And also said that if, by some off chance, you make it to heaven, it’s really only because of what their group believes, does and is responsible for, you might think “hmmm…seems like they think they have a monopoly on God.”
To some believers, the idea that Christ needs to be protected by having someone lock him in a box inside of a locked building, is kind of bizarre. After all, Christ himself walked among humans, and he is God. So what conclusion might they arrive at about a group that holds itself responsible for protecting Christ from humanity itself?
It might appear rather different from the other side of things, even though it makes sense to you to do everything within your power to honor Christ, to someone else, it looks like you believe you can keep him under lock and key and tell others that they don’t really have Christ no matter how much they believe they might.
Can a human truly desecrate the Almighty God? What could anyone ever do that would have the least deleterious effect on God? Nothing. Anything they might try might do harm to themselves, but no one has any power of any kind to actually harm God. They might upset those who love him, but God is able to take care of himself. The Catholic Church proposes to be protecting him from humans, say that they hold the keys to heaven, and that no one gets through except through them, and that they have been tasked with protecting Christ himself. Yet you say that the Catholic Church doesn’t claim a monopoly on God. If it’s the only means to Christ and God, then how is that NOT a monopoly?
If there is only one place through which you can access something, that is the definition of monopoly. I’m not making this up. This is what the Church teaches and believes. It allows that God might do things it’s not fully aware of, but it is still being done, mystically, via the Church.