Most people on this forum seem to share your sentiment.
Let me present the (hopefully) ultimate argument. The spec does not refer to ordered lists as number lists (or numbered lists, or numeric lists), although they are marked exclusively (in core CommonMark) by ASCII decimal digits in both input and output. On the other hand, unordered list items are only rendered with bullet markers (in most formats, at that), but only have -, + or * markers in the input (at least until Unicode bullets are part of the spec). Why bullet lists then?
@tin-pot, I hope my “old terminology” remark hasn’t offended you, and I do apologize if it has. I never meant to imply old == bad (especially since my proposal seems to be in complete accord with SGML), only that terms should be judged on merit alone (proof). Anyway, the older an engineer, the more spec term changes he proposes 