Religious dogma, on the other hand, is by definition not up for discussion...
Except it is. Every religion has discussions,
endless discussions on what exactly it means to belong to that religion.
If you were active in a church or a similar religious institution, you might know this.
Churches form associations with other churches of the same denomination. If your church is Baptist, you might belong to the SBC or Southern Baptist Convention. Ditto with Anglicans, Lutherans, Episcopalians or whatever, except they (of course) join different associations.
These associations have periodicals, magazines, newsletters, e-mail lists, etcetera where the clergy of these religions read, write and discuss various issues and how their particular faith responds to them. They don’t always form a consensus, and there are often differences of opinion.
Some religions even have conventions (the SBC, for example) where member churches send delegates and they
vote on the various issues that make up their faith in a process that’s actually quite similar to a major political party convention voting on its party platform.
Naturally, individuals, and individual churches, may disagree with the consensus. If the disagreement is strong enough, they may leave and form another association with other like-minded congregations.
This fantasy of yours, that the word of God is final with no room for discussion may make a good Hollywood stereotype, but since the Inquisition ended, it’s never been true.