Hello Andrei,
It's reasonable to say that you decide at application design level what memory management approach you want to choose. That doesn't fragment the community. The decision is similar to many others made at the same level: libraries used, build flags, target platform(s), pointer size (32 vs. 64, not an option yet for dmd), etc.
IIRC you can right now point to code that makes the memory management choice at a much finer level: lots of graphics and other types of RT code have large chunks of code that do zero allocation (they don't even uses malloc) but rather keep externally supplied buffers around to work with. In D where detecting allocations is harder than just greping for malloc, having compiler support would be really nice.
