How does your WV inform your politics?

[Angrboda]

Necessarily?  OK.  If we are going for that level of precision of language:

Islam harms society because its adherents will most likely do things or try and do things that cause harm, such as medically unnecessary infant circumcisions.   I believe I have warrant for this belief because every Islamic society and the vast majority of individual Muslims practice or attempt to practice or express the desire to practice infant medically unnecessary infant circumcision.

Do you deny that there is highly likely an influential link between Islamic teaching and Islamic behaviour?

As for infant genital mutilation (as just one example of bad religious behaviour) being bad, I simply argue that it causes suffering for no reason.  To show it has a reason you'd have to show that Islam was true.  Good luck with that.

Well, first off, it's generally recognized that parents being allowed to make important decisions for their children is a good, despite that some incidental harm occurs.

As to whether it's likely that Islam will likely lead to these things, that's your case to make. Just as other religions have evolved to become acceptable members of society, so, too, may Islam. And I'll point out that the majority of bad practices in Islam are based on the culture, not the religion, just as many of the despicable laws advocated for by Christians are based as much on their political beliefs as it is their religious ones. So you, at minimum, need to separate out what of the harms you see are actually based upon the religion and that the religion necessarily requires these things, otherwise your warrant is broken. And you're still trying to shift the burden of proof. Apparently, you aren't happy with having to actually prove your points.