Miiverse was quite fun at first, but I guess Nintendo got annoyed with how the userbase kept... well, trying to use their social media site like it was a social media site. Clearly, they wanted something that would look good for PR judging from their marketing screenshots, stuff like "collected all stars in world 8!" instead of "damn, Lucina is really hot."
Of course, we got the latter, because Nintendo grossly misjudged how the internet actually works. Hence we they essentially tried their best to kill the site with updates like this, hoping a limit of 30 posts a day would deter users of that nature, but they ended up creating alts instead to bypass the limit. It was easy enough to create separate profiles on their main console at the time - the Wii U - and they either had no way of telling or couldn't be bothered to ban any of these accounts, most likely the former.
At the end of the day, the usuals would continue to dominate the site, and it never ended up like Nintendo had hoped it would. Hopefully they learned their lesson - no matter how many posts you limit per day, no matter how many limitations you're going to enforce, users are still going to call Lucina hot. Because it's true; Lucina is hot.
