Hadn't heard of it either until up-thread so I looked. The two primary articles that were found on a search were from Reuters and the San Antonio Express News. Most other seem to just be referencing the Reuters article and using the same quotes. Tend to think the opinion up-thread is probably close, and SpaceX is basically not paying because they can, because people want the work, and because they can make more holding the money and delaying as long as possible, while eating relatively small fees.
There's also a "somewhat" unique one from MySanAntonio that goes over the general range of lawsuits that are being filed against Musk in Texas over a range of issues. It happens to include the Reuters article lawsuits and liens as one of the many listed.
Reuters, May 2024: "Quick to Build, Slow to Pay" https://www.reuters.com/technology/space/musks-spacex-is-qui...
SAEN, Feb, 2025: "Contractors say they're owed more than $5.5 million" https://www.expressnews.com/business/article/spacex-unpaid-c...
There's also a "somewhat" unique one from MySanAntonio that goes over the general range of lawsuits that are being filed against Musk in Texas over a range of issues. It happens to include the Reuters article lawsuits and liens as one of the many listed.
MySanAntonio, Sept, 2024: "lawsuits in Texas" https://www.mysanantonio.com/news/austin/article/elon-musk-t...