I completely agree. People often think the slippery slope fallacy applies to any statement that A could maybe lead to Z and Z is not the guaranteed outcome. In truth, it's only a fallacy when A cannot lead to Z at all (or at least, Z seems very implausible).

For example (for anyone still unclear about this):

"Developing nuclear weapons will lead to nuclear war" = Slippery slope fallacy. Nuclear war isn't guaranteed to happen just because a nation has nuclear weapons.

"Developing nuclear weapons could lead to nuclear war" = Not a slippery slope fallacy. Nuclear war could indeed happen if someone has nuclear weapons.