Cumulative radioactivity emitted by German coal as a result of the ban on nuclear is likely higher than the amount of radioactivity spread by the Fukushima disaster. We can also add lung issues and other pollution of the environment caused by soot.
By contrast Poland was ~90% for years and only just slipped below 50%.
If I had to guess why Poland never got any criticism for that while Germany was routinely pilloried by certain flavors of propaganda I would hypothesize that it was because Poland weren't humiliating the nuclear industry by swapping them with solar panels and wind turbines at 1/5th the price.
This is why after having spent a trillion of euros in renewables, Germany still has the highest cost of electricity and still relies on French nuclear to stabilize their network. Same goes with Spain, that had a major blackout caused by a renewable shortfall.
Gas, batteries, grid interconnects and pumped storage are the only things which can stabilise the grid to properly match supply with demand. There is far more money available for all of them if you don't have to spend 5x as much per kWh on nuclear power.
While the global warming denialist brigade did try to pin Spain's blackouts on too many solar panels it was actually caused by voltage control on the grid.
Another irony was that already in in 2015, the French National Assembly voted that by 2025 only 50% of France's energy will be produced by nuclear plants. So in a way the nuclear reactors themself helped to fullfill the 2015 promise.
To be serious. After event in 2011 Fukushima, French nuclear energy didn't get much support from French politicians and was seen only as a necessary evil, which will be sooner or later replaced with German style energie transition. Only after the 2022 Russian invasion and stopping of Russian gas started the French politicians to understand the value of electricity source not dependent on foreign gas imports.
Germany imports all of its gas and batteries, has no significant potential for pumped storage (in relation to the size of its electricity grid).
Solar panels were not the cause of Spain's blackout, insufficient voltage control in solar invertors was a contributing factor. Like with many serious accidents, there was not a single cause of Spain's blackout, but many factors.
And interestingly, you mentioned gas: in 2022 the EU went through a major energy crisis as Germany was counting on Russian gas to produce electricity. Pumped storage is finite and already maximized in Europe, same as hydro. Batteries are still unproven economically at scale.
One can accept climate change but be sceptic about the solutions pushed by the various lobbies, which led to the downfall of German's industry.