My perspective comes from a person that enjoys the many facets of Halo. I love the lore and eat up the campaign. I also love MP, with a preference of BTB on larger maps. I also have enjoyed Firefight mode and Spartan Ops. In the past, I have enjoyed MP split screen, with all of the "stop looking at my screen!" drama that accompanies it.
This is why I was asking for us to suspend judgement before dismissing the title completely. But like I said, if the criteria for Halo enjoyment 100% depends on split screen, then I can see how people can utterly dismiss Halo 5.
My experience is that people often play games for multiple reasons. So for those folk, perhaps 343i will show something that may appeal in a different way.
Anyways, I am genuinely sorry that you did not get what you wanted.
Best regards