The past conservative governments have slowed down renewables unnecessarily. But one of the biggest successes of the world destruction lobby is to make people believe the energy transition was hard. Don't focus too much on the little things. Look at the big picture: https://www.energy-charts.info/charts/renewable_share/chart.htm?l=en&c=DE&interval=year&legendItems=01

Hard coal and lignite have a share of 35.3 percent in German power production (compared to 35.2% from renewables, 11.7% from nuclear and 12.8% from natural gas in 2018).

As of five years ago they were also heavily relying on renewables according to your source.