Doesn't surprise me at all - the level of energy in the most recent protests around the repeal was optically quite a bit lower than previous efforts. We were basically warned this would happen too, that Net Neutrality opponents just keep beating the drum until the general population got tired of resisting.
The general population never resisted, because they were never really participants in the conversation.
Most of the net neutrality activism happened within the bubble of people who work in or care deeply about tech. I don't know very many people in the general public who had heard the term "net neutrality" before I mentioned it to them, and I live in Silicon Valley, so I would expect the general public here to be a bit more technology-inclined than in the rest of the country.
This should be a wake up call to proponents of net neutrality -- better marketing and communication with the general public is going to be needed.