No, CBH99, I am afraid it was just a flippant and actually improper tweet.
First of all, the media DID report that the funding was allocated months before ... but only a few days later when they finally managed to determine that fact. As drafted, the tweet makes no reference to the fact that it was already allocated funding, so they had to investigate to see wether it was such a past allocation or new funding promised on the fly without parliament agreement. The tweet is totally unclear as to the fact that it was past policy or not. And if that's a way to inform younger gens of your policy, its a pretty weird one since it does not makes that statement.
Moreover, the tweet is wrong in and of itself where the social message is concerned: #Educannotwait is NOT a fund dedicated to supporting girl and women education around the world, it is a U.N. emergency fund dedicated to providing educational services to all (boys and girls) children in area affected by disasters, be they wars, natural disaster, etc. So Trudeau's tweet is not accurate at all.