That, of course, goes out the window when the person you're arguing with legitimately identifies as a Nazi.
Respectfully, Twitter is kind of living proof of the opposite -- clearly they can overwhelm/outvote people (and even out-spend regular folks, if you throw an $8 price tag barrier up), despite being a small number of the total population.
there clearly is a gulf between people who actively wish to make it so and those who consume the byproduct of their effort.
This line of reasoning goes nowhere.
If you think the solution to blocking a sub (or all of Reddit) is "a hundred million people can just all decide to go somewhere else the next day", you fundamentally misunderstand how the community and network effect works.
Some of that hundred million would disappear, sure, but hey - what percentage of subscribers are relatively inactive anyway?