For example the npm installations of react show that old versions are still downloaded a lot in the last 7 days: https://www.npmjs.com/package/react?activeTab=versions
jQuery on a random CDN with stats also shows that many websites are likely never going to update it: https://www.jsdelivr.com/package/npm/jquery?tab=stats
You also sees that with system administrators: here is curl on debian from people who shares about it: https://qa.debian.org/popcon-graph.php?packages=curl&show_in...
For example the npm installations of react show that old versions are still downloaded a lot in the last 7 days: https://www.npmjs.com/package/react?activeTab=versions
jQuery on a random CDN with stats also shows that many websites are likely never going to update it: https://www.jsdelivr.com/package/npm/jquery?tab=stats
You also sees that with system administrators: here is curl on debian from people who shares about it: https://qa.debian.org/popcon-graph.php?packages=curl&show_in...