It's about how rapidly a changeover in energy production to sustainable can occur. Germany was one of the world's biggest nuclear energy producers(France being the leader of that pack), and they've gone from that to one of the biggest solar producers in only a year or so. With a really large economy, without losing much GDP. The point that's being demonstrated is that a power infrastructure changeover can be done without sacrificing being a first world nation along the way.
This is exactly the sort of response the OP's post is pre-empting. Germany hasn't suddenly changed their energy production to solar. For the vast majority of the year, they've changed it to coal. On occasion, they generate 50% of their power from solar. On average, they generate a tiny fraction of that (5% was bandied around upthread; have no idea from where that number was sourced though), with coal picking up the load.
The OPs point is that people like you shouldn't point to single instances of non-representative power generation, and then claim it's a revolution in solar power.
Oh, and the price of that power is triple that of energy in the US.