The writer of this article has obviously no clue what he's talking about. This is by no means a landmark decision.
German civil law has four levels of courts from top to bottom:
1. Bundesgerichtshof (BGH)
2. Oberlandesgericht (OLG)
3. Landgericht (LG)
4. Amtsgericht (AG)
When being the plaintiff you are going from lowest court to highest over time, if possible. This also means that Landgericht is able to revise decisions from the Amtsgericht, OLG from LG and so on.
If the amount in dispute is 10.000 Euros or less, you will start at the AG. If it is bigger than 10K, you will start at the LG. The amount of dispute is higher than 10K, which is why this was the first decision on that matter. It has no fundamental meaning. Since Google has an office in Munich this is why it started here.
Only decisions from the BGH have that, and from the OLG can act as guideline for lower courts in its jurisdiction.
In other words: let's see how this is going to progress, and come back to it in 2-3 years or so.