Murky ownership, you bet.
However, why is the G&M just picking on the Liberals and Anbang in this one deal?
Wouldn't we then have to disqualify almost every purchase of a Canadian company that is initiated by foreign companies located in China, Russia, Saudi Arabia, etc... where criminal connection, govt connections, family connections, kleptocracy, royalty, and dictatorship are commonplace?  A long list to review, indeed!
When should govt be investigating the background of every purchaser?  Isn't it up to the vendor to determine whether Anbang's money is good for acceptance, and not the morality police?
Look, I think this stinks.  Yet, all I hear (from the G&M and other Cons) is how govt should mind their own business and stay out of the way.  However, if there is an opportunistic gotcha moment, critics beg for exceptions or look to score more points against Ottawa.  
You want pro-business and non-interference, then you should live with the consequences.