"not buying that this isn't anti renewable propaganda for the US"
Its the Guardian so that is a very unlikely motivation.
The guardian have previously been found to generate a significant amount of ad revenue from fossil fuel companies. They aren't politically aligned with it, but are financially. Remember that a large portion of the left in the UK are also anti-solar since they are pro-green nature and they have yet to make a choice on this.
P.s I am pro renewable and pro-solar/wind/nuclear just to clarify that this is nothing about my personal beliefs.
_Something_ motivates them, though. They have been on a wild anti-solar bend the last year or more. Dozens of articles, all with the same anti-solar NIMBY bent