Your data source is outdated. You’re looking at data up to 2022, whilst his data shows 2023-2024, which is more recent.
2022 also saw problems like the Ukraine war frustrating gas supply, forcing the use of more coal. And there was covid throwing a wrench into things as well.
Nuclear powerplants in Germany were beyond their lifespan and fixing and modernizing them was not economically feasible. Just too expensive compared to other forms of energy.
Germany certainly hasn’t been “replacing nuclear with coal”.