As the article points out, Dickens wrote two endings for Great Expectations and this adaptation:
chooses a ‘compromise’ ending between the two that Dickens originally wrote.
So who are the 'critics' who are in 'uproar' about this 'changed' ending?
Well, only one person is actually quoted in the entire story. Here's what he says in the Telegraph's article (the 'inspiration' for the Mail's piece):
Robert Douglas-Fairhurst, an Oxford don and author of the book Becoming Dickens, said it was impossible to run out of ways to interpret the writer.
He said Miss Havisham as a "cougar rather than a crone" is "absolutely right" and added that Dickens always wrote his endings so they could be interpreted in different ways.
"I think Dickens is strong enough to withstand anything we do to him," said Dr Douglas-Fairhurst. "He has a chameleon-like ability to adapt to changing circumstances."
He added that it was fine to mess with both the time structure and the endings of Dickens' novels. "Dickens is inexhaustible," he said.
Not really an 'uproar' is it?
(Hat-tip to JemStone)