Over the years, we saw too many people replying to old threads had information that was no longer relevant, which created more confusion. We always err on the side of removing confusion and incorrect information.
(I’d have to look at which timeout 30 from last reply and which are 30 from creation. It’s not a global setting and it’s supposed to be 30 from last reply in most cases)
EDIT: Everything should be set to 30 from last reply now. That will not change existing tickets unfortunately. Luckily, only a few sections were wrong.