I don't think it's anywhere near good enough to be called "not very good."
I assume the manufacturers ... wisely ... don't try to guess what your primary use for the saw will be, and that the owner is the best judge of which blade best suits their needs.
It's probably NOT a good investment to try to put a top-notch, fairly expensive blade on these things, knowing that a good % of buyers will likely want to swap it out, anyway.
But ... yeah: the OEM blade on my G0555X had trouble cutting room-temperature butter