I love Linux as much as the next sysadmin, but given how central it is to the bottom lines of so many corporations, there's no way I'm going to donate to it as an individual. Let the companies that profit from it fund it.
The more people (and companies) donate the better we're all off IMO.
What he's saying is that linux is part of a sustainable economic system from which companies profile, so that (now) it does not require individual charitable contributions.
If he "wants to" + "can", then he should.
The argument was against "I can but why should I if companies will", which I think misses the point of contribution. The more the better.