You’ve got slippery slope backwards lol.

Slippery slope is I can’t let you do ABC because if you do you’ll do XYZ.

This is you can’t do ABC, XYZ, 123, QWERTY, but if you do XYZ, 123, QWERTY you shouldn’t tell us because it’s actually okay and we didn’t really mean all those other things.

Valves policy if anything is the bad policy because it’s the strict policy you put in place because you’re implementing it due being worried about slippery slope.

Edit: And were literally in a thread where someone from VALVE is defending this bad policy, so this is the exact place to say my piece on it.

edit: Just to note, Valve will let you do it, they just stick you with a declaration that has a negative connotation to much of the community, such as the developer replying here, which is harmful to the game developer, while those who lie and did the exact same thing benefit from a shiny decal declaring their false purity