Most banks are doing the same thing,ie updating  technology. They have to remain competitive or they will take a hit or perhaps not survive. My TD bank did the same thing for a branch near me. I was angry like many but it has not been that bad as I can do online banking with PC. there are times I need to get to a branch . 
The importance of this article is that Canada's Big Banks have done very well for decades. This is where the money is. There is no reason why they still can't make money for decades to come. I own BN and also a basket. of Banks. I remember when CIBC was the bank that took the biggest hit after 2008. I thought later, why did I not buy some of that. I have come to realize I am not that smart.
"My favourite TSX bank buying strategy is paying off yet again". IMO you have lucked out. Buying stocks in many ways  is a crap shoot. Buying quality companies , keeping quality companies is  bound to get you on average returns  of 5 to 10%. and still have a life. :)