Trump may be a jerk but in the case he is right. Its pretty obvious.  The Obama administration, between a rock and a hard place during an election, chose not to rock the boat.  Therefore passively, they colluded or accept the interference.  The supposition is consistent based on the bottom two points.

1. Everyone expected Clinton to win including the Globe and CNN etc..
2. Obama, was a great communicator, but on many issues delayed confrontation with Russia (Syria etc..) 

Hate Trump if you want, but Obama officials stated publicly that he knew during the campaign and did not deal with it.  The people who said this are Obama supporters.

I dont like Trump, wouldn't want him running Canada - but equally think the media is trying to create an issue for the profit have having Trump haters subscribe (the Globe or the NY Times) or watch (CNN).

The US political and media situation is a mess and its not just Trump.