It's a REALLY good UI. Like, utterly cravingly amazingly good.
That and people haven't really been pouring coal into the hype train like they do for Smash and Pokemon with the Switch games announced right now.
I imagine once someone gets Zelda early there will be a bit more excitement though, LOL. People complain about knowing too much about games before they release and BotW in particular has an exploration factor, so it's actually a pretty good thing that they've kept it under wraps this long, but it's going to be exciting knowing more than bits and pieces about the game that lies beyond the tutorial area. There's all sorts of things that we either likely haven't even seen or have only seen tiny glimpses of that I want to see. Heck, a single word in the ESRB rating let slip something that has me curious and hyped combined with what we know, even if it's a relatively small detail.
On the other hand, for those satisfied with their Wii U systems, they can probably wait a few months while the people who are actually sold on early adopting scoop up the first shipment or two and then watch E3 with Splatoon 2 hopefully releasing not too long after that.
If peeps think Splatoon 2 is a port, there's a chance they haven't played Splatoon. There's a ton of both subtle and not-so-subtle new additions, some of which go down to the mechanics of the game, and the whole package has just generally been prettied up a bit (although they're going to prioritize 60 FPS over any graphics as stated in an interview, which I'm sure many people will also be happy about). Plus, there seems to be an overall sense of them not showing their full hand with the game this far back. Squid Research Lab still has a lot of research to do. Early adopter Switch owners I would recommend trying to get into the server stress test for Splatoon 2 later in March, otherwise hopefully they'll have another Testfire later down the road when the Switch has a larger population of players.
Splatoon is good stuff, though. *woomy intensifies*