Can we blame them exposing this so called new banking trojan and providing solutions?
There is always doubt that a solution can be created first, and then they start creating something that will sell the product that solves the problem. This is difficult to prove, but when one looks at the contexts of the article, it is clear that one first goes with the creation of fear, then some technicalities, and finally presents a solution.
We can't blame anyone for presenting something, one way or another - but we can wonder if we should buy separate software for every new malware that someone discovers? I personally do not do this, I trust proven security solutions for now. For any significant amount of crypto I use through my smartphone only smart solution is hardware wallet which should be immune to these kinds of attacks.
Banking is something else entirely, and there really is a problem for anyone who is not aware of what they are installing on their smartphone. It would be ideal to have a business/banking device, and one for fun/entertainment.