It's not really misleading. It was simply 'if the calendar were to be removed from the core distribution, how much effort is required'. The answer is... about a day's worth of effort if you know the code base, and the source of this post was to highlight the fact that it is doable and provides some insight on where to start to do so, because it's already been done.
Its a pity that there was so much squabbling over the future of SMF. Isn't there a democratic way of getting end users needs and developers ideas voted on.
Without wanting to get political, my view is that democracy in software development doesn't work because you have more people involved in the decision making process than the people who actually have to make the decision happen, and that the best approach is for benevolent dictators to ask for feedback, then go away and implement it, much as XenForo is doing in terms of how they approach development.
I would be very biased if I were to dwell on the squabbling, as one of those directly involved. There was a time when I nearly ended up on the dev team, but in hindsight, I'm very glad that didn't happen.
At least it goes through a process that way so might not attract as much strong feeling when things dont go their way.
That's the problem with democracy, you get so many more voices that you can't hear when something important is being said, and it has a habit of sucking all the productivity out of things.
Developers decide on the best/top improvements that end users voted for. Maybe even a dedicated developers set of ideas.
At the moment it seems like the unhappy ones (forks) have divided and conquered themselves. The mods community anyway looked more active say 4 years ago.
There's a reason why there's only two properly active forks at this time when at one point there were about 8.