I've read this answer to find out that pinned messages are being unpinned automatically after 14 days because "we found this feature to be abused too much". I fail to understand how a pinned message in someones chat room could abuse the site in any way.
However, I find pinning a message an extremely useful feature for messages that link to different sources that keeps being updated once in a while. I have a moderation of type chat room on Stack Overflow, and I want some messages (that link to outer sources with link to poor quality questions, for instance) to remain pinned instead of every 2 weeks looking for the original message and repin it again.
So can we undo this change, or at least explain to me why we need this limitation in the first place.