Less content in the Stormblood when compared to Heavensward?

[Ghishlain]

Source ? The only thing I remember is Yoshi-P saying that they'll never make another job out of an expansion, like they did with Ninja.

I second this request. I've been seeing this claim pop up here and there, but have not in recent memory seen any interview claiming they wouldn't do it again so much as them saying it was difficult. It's like it must be the one interview that flew under my radar.

PAX East 2015 FFXIV Presentation. Link should work properly but it's around the 25:30 mark of the video.

Things can change in an almost two year period though. They would've had to finalize their job selection by around May-June of 2016 to make the release date if the data they provided is accurate so they might've changed their minds in the year after the above presentation which was released in March 2015.