Otherwise known as "banks lend money to people".Actually the point of the article is that banks lend money to corporations, some of which go and do awful things. Not that they simply lend money to "people".
Much like technology that can be used for good and bad, I prefer to live in a world where services are available to all without discrimination – knowing that some people will do things I disagree with using those services – than a world where some random person's morals are used to restrict those services to certain groups.
Well, that's fine for an ethos when applied to individuals... but its applicability to corporations is an entirely different matter, altogether.
If a corporation is caught doing something that either domestic or international legal structures -- not simply "some person's random morals" -- have determined to cause great harm to humanity (including, just as an example, blatant, open-air gang-rape of natural resources, as appears to be happening in certain parts of Indonesia) -- then no, they aren't entitled to "equal access" to resources and services. They're going to be prohibited from doing those things, using all legal means available -- including, one find day, let us hope, severe restrictions on access to financial resources; and if necessary, criminal prosecution of the corporation's registered officers.
Successfully implemented, the proper term for such measures it not "discrimination". It's called rule of law.
Whether or not legal structures currently exist to prohibit the kind of abuses described in the article is a separate, technical matter. But address your comment directly: the idea that we should not attempt to control (via legislation or moral opprobrium) the lending behavior of banks with regard to corporations because that would be a form of "discrimination", or somehow an infliction of "someone's random morals" on their individual choices -- is fundamentally flawed.