The full story is in the Open Letter, but it's long: https://openletter.earth/open-letter-to-organic-maps-shareholders-a0bf770c

AI summary from this comment from the osm forum:

Concrete Issues Leading to the Open Letter

• Misuse of Donations: Alexander Borsuk allegedly used project donations to cover personal holiday expenses, raising concerns about financial integrity.
• Lack of Financial Transparency: Contributors were consistently denied access to financial information, including total donations received and expenditures.
• Secret Hiring Practices: The hiring of the first full-time developer in January 2024 was kept secret from contributors, who only learned about it months later.
• Closed Decision-Making: Key project decisions, such as agreements with external partners (e.g., Kayak.com), were made without informing or consulting contributors.
• Shareholder Control: The governance structure allowed shareholders to make unilateral decisions, sidelining the input of long-term contributors.
• Conflict Among Shareholders: A significant conflict between shareholders Roman Tsisyk and Alexander Borsuk has led to a breakdown in collaboration, jeopardizing project stability.
• Lack of Accountability: The board, composed solely of shareholders, failed to rotate members or ensure accountability, leading to a stagnant governance model.
• Potential for Profit Motives: Contributors expressed concerns that the project could be sold or monetized for shareholder profit, undermining its community-driven mission.
• Inadequate Communication: Shareholders did not adequately communicate the role of Organic Maps OÜ as a for-profit entity, leaving contributors unaware of its implications.
• Violation of Open Source Values: While the maps generator code is technically available, the version in production contains private changes that are not disclosed, and the server used for downloading maps operates with proprietary elements, contradicting the project’s stated commitment to Free and Open Source Software principles.