0 allocations after the program initializes.

Well if you're using the standard library then you're not really paying attention to allocations and deallocations for one. For instance, the use of std::string. So I guess I'm wondering if you work in an industry that avoids std?

Not an expert but I’m pretty sure no exceptions means you can’t use significant parts of std algorithm or the std containers.

And if you’re using pooling I think RAII gets significantly trickier to do.

And what does "modern" has to do with it anyway.