I think it's good that they went for a seemingly small period, at least at first. This is a great way to convince the users to join the protest, which is the fuel of it, as asking so many people to forget about Reddit for longer easily could result in more people ignoring the actual boycott because of the scale of the change to their internet habits.
Having many services welcoming redditors is a great help, of course, but it's much easier to convince a large number of people to keep the protest going now that many have found alternatives they like - perhaps some won't migrate completely, but they may use Reddit less as a result. The amount of these people could have been significantly lower had the people had to consider going off Reddit for a similarly significant longer period of time.
The 48 hours of boycott may seem like a small step, but this step is a stepping stone to huge impacts later on, as we're already seeing by the attention the whole situation is picking up.
We're far from the credits roll in this movie.
This wad made me feel like it was going to be a great Spooktober material, but now that's so many people played it, commented on it, and loved it, and now John himself is playing it, I really wanna play it myself and join the still fresh talks.
On Doom, no less, the game that breathed in so much life into the FPS genere and thus modern gaming as a whole, released back in 1993, and yet still active and alive thanks to its community! I love modding!