Software written in C continues to be riddled with elementary security holes, despite being written and reviewed by experts. If anything the push to rewrite is too weak, we have known about the dangers for decades at this point.
We aren't destroying software, it was never all that. The software of the 90s was generally janky in a way that would never be tolerated today.
Modern software, at least for web, is generally hideously unreliable, unperformant, and manages decent uptime only by running it in large parallel deployments, with an orchestrator that automatically reboots dead instances.
Speaking as someone who grew up in the 90's, I think the software products thst are developed today lack the creativity that existed in the software developed during the 90's. Rigid development frameworks that exist today prevent "jankiness" by reducing the number of design decisions that are available to a developer, and in my opinion this has resulted in a lack of diversity in the products available to consumers.
Ironically everyone today is using Kubernetes (aka "Borg") under the hood, and this is the same weakness that the Borg had in Star Trek.
Microsoft’s Garnet and Dragonfly are independent implementations that are pretty different under the hood.