In the aftermath of some minor dust-kicking at Zippy's, I'm still trying to better express where I think usury goes off the rails as a harbinger of ills to come, or a source of the Church's problems in the world.
A key difference between usury and modern sins is that usurers don't particularly care what you think of them, so long as you get out of their way. They'll jump through some hoops - they'll morally justify what they do, they'll rail against 'bad' usurers. They'll say they aren't involved in usury but something else via a technicality. So long as they make their money, so long as their business prospers, they'll deal with a lot of bullshit. Cost of doing business and all.
That doesn't really 'work' for modern liberal sins. Tell me about how you'll have Catholic priests turning a blind eye towards sodomy, refusing to talk about gay marriage at all, even serving communion to the gay couple in the church because Who Am I to Judge and for all we know they're a celibate couple of close friends who every now and then slip up and wham, anal sex. In theory, it's possible.
In practice, it's not, because these groups are not after second-class citizen status. The usurers don't care - Team LGBT cares very much indeed. They won't let your teaching merely go quiet. They will not accept being tolerated, even tolerated to an absurd degree. They want complete parity and condemnation of the unequal past. Hell, they want beyond parity if they can swing it, complete with talk about how (if only in some ways) the same-sex couple is -superior-. Same with the feminists. Same with most of the modern social justice warriors.
Let me put that another way: if the most LGBT proponents could ever hope to achieve in the Church was usury-status, it would be defeat. If the most feminists could ever achieve was some fake sweet-n-low 'near enough' version of the priesthood - "Hey look, women can dress up like priests and do some things but they're not REAL priests" - it would be defeat. At least in their eyes. And they are not groups who will settle for 'the best we can do'.
These are people who burn their own organizations to the ground rather than capitulate. They will not settle for a generous tolerance, as obnoxious as that would be.