Nintendo is very much competing and they have a 3.5 year head start on Generation 9. The console war is only over for Microsoft. When they say "The console war is over" they mean "for us".
Hmm personally I think Switch is gen 8 as a mid gen substitute for the WiiU. But I mean they aren’t competing for specs and top 3rd party games like Sony and MS are now. They just doing their own thing. MS is doing that too but is still very much competing in the traditional sense as well.