I understand it if you look at the receiving end. Say in Germany they built natural gas plants shortly before the war under the premise that they must be Hydrogen ready, aka right now we use natural gas but promise in a few years when Hydrogen production is there, we'll switch to Hydrogen. That can be very easily criticized as green washing of the gas plants (although a gas plant is much better than what it would have replaced, brown coal). Now with the war and the pipelines destroyed, Germany went a different route and instead runs the coal plants for a longer time.
But if you look at the production side, they are building a solar power plant. How is that green washing? There is no way to use a solar power plant other than to collect renewable energy. Either it is operational and collects renewable energy, to send it to various places, or it is not operational, but then it's been a bad investment for the investors. Now, maybe it could be part of some greater scheme where one uses this plant as the "source" of a multiple of the ammonium it can actually produce, and sells ammonium from fossil sources as made by Chilean sun. But that should then be addressed on its own, and not hamper the project itself (although of course a different location would be better that doesn't risk the operations of scientific instruments worth billions).