Most of our plants were already fairly old and major overhauls would’ve been necessary.
In 2000 we had plans for a nuclear exit already, intending to phase them out until 2015. In 2010 the government decided to keep some running. IIRC they did that in part so they could shut down coal plants instead.
Then Fukushima happened and we went full panic mode, deciding to shut all of them down ASAP. Then the Ukraine war got reignited and the timeline got slightly stretched out a little again for practical reasons.
The last three reactors got shut down last April, about eight years later than the 2000 plan intended.