I want to revive this topic. Obsidian is an amazing application, but the work plugin developers are doing is absolutely incredible. Plugins are one of the reasons why Obsidian is so flexible and powerful.
So, while the original proposal would be cool, I understand that it is not easy to implement and make it sustainable (at least at this stage). But what about this:
What if Obsidian could fetch the FUNDING.yml file in GitHub repository and show the donations option directly in the Community Plugin page?