There probably is not an advantage to using multiple threads, unless you really need to free up the main thread, but even then I would just batch the calls spar

There probably is not an advantage to using multiple threads, unless you really need to free up the main thread, but even then I would just batch the calls sparsely enough that it does not hog the main thread. IIRC you cannot use multiple threads with the same context in vanilla OpenGL but they did become available with Vulkan.