I suppose I don't see liberals as being on any sort of pipeline to fascism in the first place. The liberals I know are largely in agreement with leftists on the danger of America's proto-fascist elements (e.g., militarized police and mass incarceration); they just want shitty, half-assed reformist solutions and are reflexively (but not militantly) pro-capitalist. If they object to a policy like Medicare for All, it's for some complex macroeconomic budgeting reason they don't really understand, not because they genuinely despise people at the bottom rungs of society. I don't see them as a few nudges away from supporting an ethnostate.

I do see many libertarians as a few nudges away from supporting an ethnostate; that's why I view them on a pipeline to fascism. Many of them do genuinely despise anyone at the bottom rungs of society, and at best they're oblivious to all the racial coding that's built into that. If left in a seamless container of like-minded thinkers, they're the type who would easily conclude that anyone who's poor should just be left to die, and from there it's only a short hop to "and if they get in my way at all I have the right to kill them."

As shitty as liberals are they generally have a level of fundamental human decency that libertarians either don't have (these folks are unreachable) or need to be reminded of.