You seriously missed the previous sentence which started with, "they seem to be going about it like assholes"?
As far as I can see, the only "asshole" behavior that they are engaging in is treating the kindergartens like everyone else. They aren't accusing the kindergartens and creche's of being theives, they aren't trying to jail anyone, they're just sending them letters that say, in the future they (the kindergartens) too must pay a license to sing any songs under their control. In other words, it's not how they are going about, it is the fact that they are going after kindergartens that makes them assholes (or, well, you know, bigger assholes).
If you are trying to make the point that trying to squeeze every bit of profit out of the world that they can, regardless of the social impact is the underlying asshole behavior, then I'm inclined to agree with you. On the other hand, I do see this case as being particularly egregious, and here's why: Teaching children songs and using music and culture as part of the education process of future generations of humanity is about as worthwhile a use of music and culture as one could possibly imagine. It's something that should be encourages, and it's one of those instances where our gut, emotional reaction is completely valid. Making it harder for creche's and kindergartens to operate is simply abysmal behavior. It's an order of magnitude worse than requiring an office party to do the same thing, and that is in turn an order of magnitude worse than requiring a club owner to do, which in turn is a bit worse than requiring someone making a commercial film to do so. All these things rob our culture and profit greedy assholes who don't contribute anything to that culture. Going after kindergartens is the logical extreme, which in its extremity points out the fallicies in the system. You may also be unaware that kindergartens and creche's in Germany are in short supply, and are often organized by parents on a volunteer basis because there just aren't enough (my cousin has organized one for example). So yeah, it's fucking terrible that they are placing an additional burden on people trying to make a positive social contribution.
If copyright is going to be a positive influence in society, and I believe an argument can be made in its defence, it requires us to differentiate between cases. So selling copies of a song I wrote without my permission is a case where I see copyright law having merit. Kids singing a song I wrote in kindergarten is a case where applying copyright law is meritless. Copyright law should not be applied to every situation where it might possibly be applied... it's for this reason that we (used to?) have the concept of fair use.
Attention copyright apologists: please don't give me that tired old line about artists having to pay their bills. Copyright law in the modern world benefits giant corporations, not artists. See www.questioncopyright.org for detailed investigations and examples. See "Sitka sings the blues" and the lectures of the creative artist responsible, for an example which categorically disproves the faulty assumption that copyright is necessary to encourage or support artists. There is plenty of evidence to encourage questioning the very existance of copyright, and there is overwhelming evidence to suggest that current copyright law needs, at the very least, massive reform.