I mean... In my opinion as a professional... all it really does is fix your levels and push the colours more saturated in most cases. 
And on some of these pieces, that's an improvement because, yeah...some of you maybe do need to think a bit more about your levels and introduce a bit more contrast into your images. I don't necessarily feel like the more saturated colours are an improvement on any of these though. I hope maybe looking at what the AI did makes people go "Oh huh, a bit more contrast and using light to create focal points really makes my images pop!" and then takes that knowledge and doing it better and less garishly than the AI did.
Have to mention, on @TheSingularitySeed 's, the AI actually made it worse though, because the levels, contrast and colour were already really good, so it just looks a bit blown out.