I believe this to an extent, but I think they’re underplaying the cost of labor.

From personal experience, purchasing several MW of panels in an international market with limited supply chain regulation, there was a ~75% markup to procure panels with a traceable supply chain - it was unconfirmed but assumed the cheaper alternative came from Xinjiang.

You can maybe attribute some of that to just simple supply/demand. There’s much more international demand, especially from wealthier countries like the US, for panels that are of known origin. But that said, I think there’s a not insignificant % of that cost uplift that is labor.