I get it. You see membership in a church organization as akin to being a citizen of a nation.
In a sense, I do to. But the church organization tie is much easier broken. One can leave a particular church organization without breaking their membership in “the church”, which is the body of believers, regardless of which organization they are a member of - or no member at all.
Thing is, I do get your position. My wife’s family is Catholic and she as catholic until around 30. I understand But I don’t think you understand the position of Christians who are not members of that organization.
I understand it. I don't agree with it.