Nintendo stopped being relevant with their WiiU, which was a disaster. Only 14 Million units sold over all. Look at Starfox on the WiiU it was widely criticized for its bad controls, Nintendo wanted it gimmicky and still thought that people would enjoy the experience. They built games around the control scheme, look at skyward sword, it sold badly, not because it was a bad game but because they pushed motion controls on it, just to have them.
When they developed Breath of the Wild they realized that they didn't even need the WiiU Gamepad for it, they realized this game would work just fine without any "LOOK AT THE CONTROLLER" Signs on your TV like many WiiU Games have. With the switch Nintendo is finally back to the roots, they won't mess up their main titles anymore, Mario Odyssey will most likely work without any gimmicky controls.
They still have their motion control Wii-Mote lookalikes with the two switch controllers but they will use them for dedicated software like 1-2-Switch rather than on their main IPs. We are finally cured of Motion Controls pestering great Nintendo Games.
Also: Nintendo is bold now, they understand that they can be successful if they reinvent the genres a new, like they did with Mario 64 and Ocarina of Time. The Nintendo we see now is the one that created some of the best 3D games back in the N64 days that still pass the test of time. -Too bad the old Rare isn't hanging around to join the party