A few folks I know switched smoothly from “climate change is fake” to “maybe it’s real but there’s nothing we can do about it at this point. Might as well live it up.” Basically anything to avoid change at any level.
I think that’s the defeatism they’re talking about here, not people pointing out the issues.
I figured it was in response to people using the ships as a gotcha. Pointing out that solar panels are manufactured using power that, itself, isn’t green yet, and are shipped using non-green methods. If done in good faith, I’d suspect the were unfamiliar with using one existing process to bootstrap a new one, but it’s usually just another way of saying we should maintain the status quo (however bad) until its replacement is absolutely perfect.