Assuming this is why the XI mobile project was scrapped.
I don't think so. Afaik XI mobile project was scrapped because Nexon couldn't deliver so they gave up. This FF14 mobile project was Tencent's project, they went to JP and pitched this project to SE and obtained the license to make their mobile game.
It's a common way for JP company to make extra money off their IP. There is like at least 5(?) Falcom IP made into mobile games by Chinese/Korean studios. Falcom only collect license fee.