No, not long term bad.
Long term bad is allowing billions of tons of coal ash to be produced and released into the environment. NOT STORED. RELEASED.
The world burns several billion tons of coal per year.
Over a decade that's at least a billion tons of coal ash produced.
Compared to that nuclear produces a tiny volume/mass of waste which is carefully stored.
If the priorities were sane, coal would be all retired, while nuclear would be kept running until renewables can actually take over (decades into the future).
Meanwhile energy prices are sky high because fossil fuel companies are holding the world hostage, speculating prices are going up. Likely in punishment for the world's decision to apparently actually put them on notice.
Just the billion tons of CO2 which will be replaced in the remaining lifetime of prematurely retired nuclear reactors is reason enough to keep those running.
Yeap, newly designed nuclear reactors are very late in US/European countries, while China is building them at much much lower delays. Because China skipped on the insane red tape created after TMI and Chernobyl. TMI (three mile island) was the accident that killed nobody and gave zero people cancer, but still paranoia ensued. Chernobyl was a massive fuck up by USSR which cared more about saving a few bucks than keeping their reactors running safely.
Bottom line is either we are serious about stopping climate change or not. If we are we need every single weapon we can use.
I don't actually support building new water cooled reactors. But the types I do support are very difficult to certify because nuclear regulators have become massive red tape organizations that seem to make their first priority killing nuclear power instead of allowing it to succeed.
All because nearly everybody that has an opinion about nuclear power has a negative one, but fails to provide any rational facts to support their opinion.
Its like people had are fearful of flying, regardless of the fact that only elevators are safer than aircraft (and probably some are still afraid of elevators).