I'd argue that these are lagging indicators. The code that's deployed and being exploited now was written years ago, using languages and tools developed decade

I'd argue that these are lagging indicators. The code that's deployed and being exploited now was written years ago, using languages and tools developed decades ago. If you read to the end of the article, it discusses recent DARPA projects that are addressing the tools and languages component. And most of this stuff is still in heavy development. Even assuming that we get it sorted out soon, it will still be years and years before most deployed software is built on these improved foundations. So yes, things are starting to get better. But it will take a long time before we see the results.