23:51
@Edward I know we're veering off topic here, but it's an interesting topic.
What you are describing is, indeed, the fallacy.
It's an argumentative fallacy that because we do it for X, we will do it for Y and Z, when that isn't the case. And rarely ever is.
"If we legalize marijuana, then what next? We legalize heroin!?" was a common argument during the debates of legalizing pot.
We of course, didn't. We focused on the issue at hand and that was that.