I would argue that a two-state solution is equally unlikely under the current circumstances.
But my overall point is not whether a one-state solution is viable, only that it is ideal, and I used it in the title to emphasize that I am not arguing against even people who want to completely dissolve the state of Israel as it exists now, but only against the idea that directly making statements that are antisemitic or in favor of ethnic cleansing is what I'm objecting to.
I find Chomsky grotesque in his campism, but to my knowledge Chomsky has only ever called for the settlements in Palestinian territory which are illegal by international law to be abandoned.