Plugin Updates
Plugin updates are important for the security and functionality of a plugin. Even though the Obsidian plugin API is very stable and things rarely get changed, it's can still happen that a plugin no longer works as expected on a new version of Obsidian, expecially when a plugin uses undocumented parts of the API. Though it is worth noting that a plugin can work perfectly fine for years without any updates.
The following chart shows the overall distribution days since the last plugin update.
Years of inactivity by release month.
When looking at the inverse of this chart, the number of plugins that have been updated in the last 12 months, no real correlation to the initial release date can be seen.