[anoojb]

You want a focus mode plugin:

https://github.com/ryanpcmcquen/obsidian-focus-mode

This is what differentiates Obsidian from many other note taking apps. Anyone who has an itch can build a plugin and customize it.

Unlike a venture-funded SaaS application there's no meaningful commercial incentive or issue with building something that will eventually get sherlock'd b the application vendor in the future.