I could be wrong, but I think Fukishima could release all the water at once and it’s effect on the ocean would be negligible.
It’s hilarious. Chicoms are complaining but the level of radiation being released is less and lower than what the chicoms release in standard operating procedure in their nuclear reactors.
Dilution is the solution for this pollution...
The ocean is vast...Fukushima not so much.
This is dark humor, of course. The core of a reactor burst open underground and hundreds of tons of water have been flushing the radoactive waste into the ocean since the reactor exploded, and will continue to do so.
At the same time, the Japanese made a show of storing water above ground, in containers that were supposed to be temporary and instead were coming apart at the seams.

The joys of nuclear power. Connect a pipe to the city water system and let hem drink it.
If the plan as stated is correct, that seems like the best way to proceed. Of course, there will always be protesters. The protesters are only viable if they actually have a better plan.