Except the shutdown had no negative effect. There was no supply shock and prices keep trending down since (Though that of course doesn't mean because of). Let's keep it real. I can probably name worse German political decisions from this week.
Three things here:
* Didn't the diversion of natural gas to electricity generation end some German industrial production completely?
* Are there not large electricity subsidies in place via subsidies for US imported LNG?
* Isn't the alternate reality where there is a surplus of electricity in German due to nuclear power a better world where Germany has more opportunity? (the AI datacentre boom is built on excess electricity, isn't it?)
* There were multiple tax reductions and I think some are in the talks now. Those were independent (and before) the nuclear shutdown.
* Probably. Nuclear should have been shutdown after gas, coal etc. I am with you on that. But the ship had already sailed long ago, before the last three plants were shut down.
[1] https://www.iwh-halle.de/fileadmin/user_upload/publications/...
It seems like the statement "No negative effect" is probably not well supported by subsequent events.