does oneguide still work : xboxone

so i found this old article about playing xbox 360 games on xbox one without backwards compatibility, apparently the xbox one (all models i think) has an hdmi input for cable or satellites, however you can connect your xbox 360 hdmi cable to the hdmi input port and play xbox 360 games using some sort of TV app (don’t know if its the same thing as oneguide) but since microsoft is transitioning from TV, i don’t know if the app still works, i don’t have an xbox one but im thinking about buying one instead of series s because of the hdmi input, now this sounds something a complete idiot would do since you could just use one of your tvs other hdmi ports, and you know what, im a fucking idiot, sure backwards compatibility exists but it doesn’t really support all 360/original games `(can’t even fucking play the simpsons hit and run) and i would still like to access the 360 dashboard.

overall, i want to know if oneguide still works with connected hdmi devices, thats literally it.

(obligatory sorry if my english bad im from brasil)