Yes. You can read Newsroom articles and support Newsrooms through membership and subscriptions without a knowledge of blockchain and you will not need to use cryptocurrency for payments. We recommend reading "A Non-Blockchain-y Person Explains Blockchain" by Civil's Vivian Schiller for more context on why it's necessary to to this model.
You can also contribute funds directly to the Civil Foundation by using a credit card. The Civil Foundation is an independent not-for-profit committed to the sustainability of trustworthy journalism around the world. It is founded on the principle that a free press is essential to a fair and just society, and must be supported by the public it serves. The Civil Foundation supports this mission via grant making to fund journalism innovation; advocacy for standards of journalism ethics; community-building among publishers and their public; and educational programming for newsrooms. It is staffed and supported by journalists and entrepreneurs with experience in media. You can learn more about the Civil Foundation here.