On an equally motivated and skilled playing field, you would be correct. The bugs that will be exploited by meaningful adversaries will not be stopped by this

On an equally motivated and skilled playing field, you would be correct. The bugs that will be exploited by meaningful adversaries will not be stopped by this effort. Latent exploitable bugs in most of the targeted mature software require significant, well-targeted compute to uncover. Google's incentives are insufficient to direct adequate resources toward the goal of making the internet a safe place for civilians.