I would assume they already have ways to bounce through a dynamically linked system library since cosmopolitan works on macos, and even more so windows.
That's true, but it's a point of pride in Cosmo's marketing that it produces statically linked binaries acroscreate, least several operating systems.
It can dynamically link the system32 DLLs in Windows and probably could OpenBSD's crt, but dynamic linking in general doesn't work. `dlopen` is no-op, and this has made Cosmo graphics extremely difficult so far.
Is that a self-imposed limitation? It sounds eminently possible to add some kind of work-around for dynamic linking. Maybe not for a general case, but for creating a GUI for instance.
Yes, there actually is a to-be merged fork of Cosmopolitan that makes Dear ImGui work, but no dynamic linking is generally a big limitation for GPU acceleration.