Fantasy Land is a disaster. Seriously, double the number of Dumbo rides? Who thought that was a good idea? Yes, the Mine Train will have long lines, but so does Small World now (thanks to FP+). And Mine Train will not be a destination attraction, like Harry Potter is down the road.
The problem with many on this board is that they rush to defend Disney; any criticism is taken as a personal attack on their childhood memories. I can love Disney World, but not love the direction it's being taken.
It is a matter of opinion on New Fantasyland being a disaster or not. The people that thought doubling the Dumbo rides where a good idea are the ones that are no longer having to stand in long lines as before and having to rush to Dumbo in the morning as one of your first stops.
Enchanted Tales with Belle is a HUGE hit and is part of new fantasyland.
Under the Sea is underwhelming and in my opinion is a disappointment.
Be our Guest is another winner in New Fantasyland.
And there are people that will come to MK because of the opening of the Mine Train. Of course, the mine train isnt a draw in and to itself like the whole Harry Potter Land is but it will be successful as a family ride. Did it take way too long to build. Yes. Could they have made it better? Yes. And the comparison to Small World is just plain silly. Small World will never see the wait times that the Mine Train will.
I am not defending Disney World nor do I see it as an attack on any of my childhood memories but merely showing where Disney has spent money on its Parks in the last 8-10 years though many dislike them spending this money on the New Fantasy Land.
There is also a problem on this board with those that dont like the direction the company is going to overly criticize every little thing now and leave out some convenient facts like that article the OP posted. It fits their narrative.
In several ways I think FP+ is a dream for many of the locals AP holders living close by now that they can reserve ahead of time. Get off from work, have a quick bite to eat, head to WDW knowing you'll have 3 FP's, watch some fireworks and head for home. And not having to waste anytime at all with the other stuff.

