Thus the only public source is ADSBExchange because it uses croudsourced data.
I think there are legitimate questions about how and where aggregating crowdsourced data on people's movements crosses a line.
I am sure that allowing crowdsourced license plate reader data that makes a full history of every car movement public would be well across the line.
I am not so sure that this crosses that line but I think that discussion would be much more interesting than the low quality Musk bashing that seems to dominates these comments. (Edit: There are also some high quality comments that are quite critical of Musk that add information and context and deserve to be more prominent, but they are in the minority as the low quality comments are pretty prevalent and not being downvoted sufficiently.)
Given that the LADD list exists, we either need to repeal that law, make circumventing that law a crime, or make the the process for inclusion in the LADD list more rigorous and public.
The current situation where we are allowing companies to bypass privacy laws by using crowdsourced data seems like a bad precedent.