Agreed. Which is why I mentioned simplicity being a benefit - if you already have a monolith that you are seeing issues with. But the parent said "You don't need microservices to do this."; this solution isn't much different from microservices.
The GP solution has very little in common with microservices - it’s just a load balanced architecture with specific pools for different workloads. Just like we could do in the 90s.
Microservices are only microservices if they have both narrow focus and radical independence. If they have narrow focus without the independence then you probably have a monolith with 25 executables to deploy.
