Yes - it definitely seems like it should be more or a "let's hope we can see both" type thing rather than an "either or type" thing. I think publicizing existing holdings is huge in that it can be done based on existing data sets as unusualwhale has shown and it is something that "we the people" can do, today - perhaps just by sharing this article.

Eradicating politicians doing insider trading is a much longer slog that we are mostly just hoping "those with the power" will enact against their own self interests.