This needs to get implemented ASAP. Users have been complaining about this for nearly a decade. I will be using other BI software at my company if Power BI can't do something as basic as showing a duration in a y-axis without ridiculous workarounds.
I could not believe this was not a bug but a missing feature for almost 10 years.
Very counterintuitive and bothersome when you have your duration data pristine in Power Query but in order to present that in a report you have to create complex and error prone dax code.