It's because the context has changed so much.
The years 2014, 2015, 2016 and 2017 were all material times in connection with this donation. Canadian universities were falling all over themselves to develop relations with China and Canadian corporations, ditto. The Government of Canada, in 2014, I believe the prime minister of the day visited China, as did the president of France and the chancellor of Germany.
The predictions were that China was going to be taking over the world economically by 2045. It was going to pass the gross domestic product of the United States. Canadians were working energetically to develop relations, and then, in the case of Canada, the two Michaels were kidnapped, and the world changed.
Today it's a fundamentally different world, and China appears to have done some very nasty things, some utterly inappropriate things, not only in Canada but in other western democracies. There's a serious threat there that must be dealt with, but that wasn't the case in 2014, 2015, 2016 and 2017.