It's up to the Guardian, not up to us.
The press didn't arise in the first place because of people feeling it was something they should support.
It filled a need.
In the U.S. at least a free and independent press is paramount to our system of government. It's why it's in the Constitution. So, no, it is up to all of us to support journalism and ensure it survives, not only the actual people writing.
I am not American, but when Trump was elected and made attacks on the media it was the 'last straw' and I took out a NYT digital sub, thinking it might help in some small way. The AUD6.40 per month is terrific value, and I often come across articles or reporting I wouldn't have otherwise. Even if I don't agree with what is written, I feel I've come away with an expanded understanding of the topic and a slightly broader world view.
And how are we to decide which journals and journalists to give money to?
Those that dig and present quality, fact-supported stories.