That actually doesn't seem like a lot (240 articles per year), but I suppose they're still in the process of gaining traction.

Diamond Open Access (or Platinum OA) is a scholarly publishing model where journals and platforms are free for both readers and authors, with no Article Processing Charges (APCs).

The problem is: publication is based on reputation. Reputation takes time and effort from the entire community.

I feel like modern infrastructure (Google Scholar, AI research, LinkedIn, etc) helped to decrease the importance of high-impact journals such as Nature, etc. Researchers don't rely on high-curated printed journals in their physical mailbox to get informed what's happening. You can just use tools to scrape content much faster.

But still: It can be career decisive if a reseachers lands a publication in a for-profit journal such as Nature.

The CS community has a much nicer publishing pipeline where most top journals are attached to non-profit conferences and the fee is 0 (beside a conference fee).

I wish more fields would work like this: you publishing with a conference proceeding and talk on the conference about your paper.

Researchers are themselves responsible for typesetting, advertising, etc. This and removing for-profit stakeholders can reduce the costs a lot.