But the default Joy-Con is completely doable
Cadence of Hyrule, like NecroDancer, is a game that relies on pressing a directional apparatus of some sort every second or less. But this time it’s not available on PC — only Switch — where your control options are limited, just as they were before with the console editions of NecroDancer.
After using an analog stick in Cadence to move around, a screen prompt informs you that a d-pad is preferable for more precise movements. But, as a general rule, the Joy-Con d-pad (which isn’t really a d-pad) just doesn’t cut it. That’s why you should plan ahead with something like a Hori d-pad controller (read: it’s a left Joy-Con that only works in portable mode) or a Pro remote with a proper d-pad.
That said, this is a double PSA (!): Cadence of Hyrule is a lot more forgiving than its predecessor, and it is entirely possible to beat the entire game with an analog stick (you can beat the original with it for that matter). I did it myself for science, then swapped to TV mode to give the Pro a go. It can be done! But you might be a bit more finicky about it, so some prepared.