Yeah but its not really powerful. Its an ACME maker. And besides the fact that it would homogenize WIX websites (a state WIX is actively trying to move away from) it would also create duplicate content, which google penalizes.
And I can say with near certainty that most end-users wont understand that copy generated for their website isnt unique to them. Most DIY site owners limit their knowledge of WIX and / or design to their specific site. If / when they realize that copy generated for “them” is ubiquitous, WIX will find themselves dealing with another user group full of unhappy customers.