I'd prefer if they were less common, but if you are making them in the first place, for the love of God make them something that you can reasonably expect to make for considerably less money than the money you are asking for, such that it is almost certain that you won't end up being overwhelmed when your budget turns out to have been optimistic, as is often the case. It is even worse from my perspective when people make a promise of the "if we get X likes on Facebook, do Y" or other promises to add stuff that isn't funded, but these are popular as a way of attracting more backers - backers whose pledges will likely go towards meeting the funding of some of your stretch goals.
Money was not the problem here. It was the question if you stick to these goals or if you substitute them for something else which probably benefits the game in general.
If anything time was the pressing issue but not money, at least for the companions.
The day/night cycle is the only goal I would agree on that they might overestimated their capabilites - and underestimated the work it would require. But they explained that in a kickstarter update for what it's worth.
