And actual conservatives have never compromised on any of these issues, even if they've lost on...
See, the thing here is that the shit that has been compromised and surrendered on can’t be said out loud or used in examples like this, because conservatives have compromised so thoroughly that they now consider holding the stances that most normal people held on the issues to be immoral.
For instance, when the supreme court legislated against restrictions on miscegenation and miscegenation marriage in Loving v. Virginia, IIRC those on the Right (in particular, those on the court who dissented) warned that this would lead to a slippery slope to the legalization of bestiality, necrophilia, incest, and sodomy. Much like sodomy marriage, miscegenation marriage was extremely unpopular with the general public at the time, and it’s legalization required the courts to impose it rather than the legislature. It even remained extremely unpopular for decades afterward.
However, when the Right was making slippery slope arguments against sodomy marriage- arguing that it would lead to bestiality, incest, and necrophilia, the Right could not draw the connection back to miscegenation, (which from a purely logical perspective, strengthens the argument), because by the point sodomy marriage became a point of open contention, conservative has compromised on the issue.
Since I know that example is going to get blowback (for the same reason it is correct) I think we could say this happened again with sodomy and sodomy marriage. When sodomy was legalized, those on the court who dissented warned this was a slippery slope to sodomy marriage, bestiality, incest, and necrophilia. They were indisputably right that it
was a slippery slope to sodomy marriage. But by the time the issue had shifted to sodomy marriage, many public figures in the conservative movement had compromised on the legalization or sodomy.
I think this issue is also muddled by the act that RINOs generally will call themselves “conservatives.” For instance, there are definitely people calling themselves “conservative” who have endorsed or given favorable coverage to Bruce Jenner, a male weirdo in a dress who had a habit of stealing his ten year old daughter’s clothes.
On the slippery slope in general FWIW I think after transexuals it’s “non-binaries” and after that it’s “polyamory” (which the left is already starting to defend) rather than this massive jump to stuff nobody defends (yet).
Edit: Oh and also prostitution legalization will get a push “i.e. sex worker” stuff. Expect the eternal lolberts to stab us in the back on these issues.