Does Arista even support PIM dense-mode? If not, why wouldn't they support it?

I'm working on vEOS routers for a multicast project. I think that implementing PIM dense-mode would be more efficient, but I can't find any commands for it and the documentation doesn't mention it. Would there be any reason for them to not support dense-mode? Cisco even supports sparse-dense mode so I don't quite understand what's going on here.