i dont think that way, ai will became better, but human-taste writing just feels different. like hand-made furniture vs factory-made furniture. they have different class.
I think the AI writing becoming better means it will appear more human rather than like better AI writing. I think the difference in feeling is similar to early attempts to generate faces with AI, which also seemed wierdly wrong in ways which were hard to describe, but now it's very hard to tell them apart.