It's not a traditional home console. Stop thinking of it as such. Nintendo is just pushing that "console" line because they still want to sell 3DS this holiday season (and they are correct to do so, the 3DS had a decent November with 555k sold in NPD) and they need to justify $59.99 game prices.
Even on Nintendo's Japanese site (the main site) they don't refer to it as a home console, just as their new system, it's only oddly for the other country sites that Nintendo describes it as a home console first.
This is for all practical purposes though the successor to the Nintendo portable line.
And sure there are probably some devs who would've made games on 3DS if the hardware wasn't so badly underpowered. Switch is basically their chance to do so.
Lots of devs have perfectly good PS3/360 engines sitting around if their PS4/XB1 engines are too much of a pain to port, and being able to play PS3/360 tier games on the road is well ... better than playing I dunno like N64/PS2 era ports.
If you think about it as a console and think this is a pissing match with PS4/XB1 (and soon PS5 and Scorpio) for third party games, you're going to be bitterly dissapointed. If you just think of it as the 3DS successor with a HDMI out, the type of support it'll get will likely be satisfactory to you. Just depends on how you want to look at it.