Technology

Except I'm not. I'm talking about a process that, unlike a slippery slope, is driven (one might say externally) by bad-faith actors with enormous capabilities, strategic planning, and a big fat track-record of desiring and actually implementing heavily extended surveillance capabilities (maybe still not a full-blown surveillance state, but this was never part of my argument).

By the way, slippery slope in itself is only a figure of argument and is not automatically a logical fallacy, no more than any other empirical argument is. It all comes down to the plausibility of the concrete empirical points being made.