Generally, I think it is a good idea for cabinet ministers to stay in their lane particularly on matters like finance, economics and defense. Of course, it's not uncommon to make these appointments based solely about politics.
However, Finance Ministers are likely not putting pen to paper or in the modern world sitting in front of a computer for weeks and weeks putting together the budget details and calculating the impacts of economic activity and policy changes.
There's career bureaucrats in the Dept. of Finance performing all that work.
that is administrative work that is done in support of Finance policy objectives which are cascaded downward from the Finance Minister
Finance is central to all other ministries as they are expected to spend in line with an operating budget
although with this lot of liberals that discipline appears to have been disregarded from word go
the decision to spend / not spend & how much falls to the Finance Minister & then ultimately the Prime Minister
a good leader is a leader who can surround him / her self with capable people who will council the leader and challenge the leader when needed
there is zero value in having a finance minister if the PM will constantly over-ride the Finances Ministers policy decisions / recommendations
This happened with Bill Morneau as well.
This boils down to Freeland wanted to slow spending to have $ in the event Trump decides to screw Canada with Tariffs
Trudeau wanted to spend in order to try and buy votes ( a very bad idea that was never going to work)
Trudeau is not a good leader, and he places his political agenda ahead of the best interests of Canada
Trudeau was never qualified for the job