The head of the Australian energy market operator AEMO, Daniel Westerman, has rejected nuclear power as a way to replace Australia’s ageing coal-fired power stations, arguing that it is too slow and too expensive. In addition, baseload power sources are not competitive in a grid dominated by wind and solar energy anyway.
You must be obnoxious on purpose, pulling our legs here, right? By the time we’ve collected enough for one fuel rod, humanity will either be extinct or evolved into some sort of powerful plasma creatures https://spectrum.ieee.org/uranium-from-seawater
How did you get that conclusion from the article you linked? The article talks about a material that can recover 6.63 mg/g per week of uranium from seawater, so a ton of it would produce just over 10lbs/week. If you produce a large enough amount of that material and put it to work it will add up to a useful amount of uranium in a short amount of time.