I don’t think older threads should be locked, but I do wish they weren’t filling up the similar threads section.
Just scrolling down and looking at my similar threads right now, most of them are from 2012 and before, and they aren’t relevant to this particular situation. Some people have posted links in this thread to actual similar threads, I wish that’s what would come up at the bottom.
I think a new feature should add value and be something people can use. I’ve learned not to use similar threads because it generally doesn’t help me - I get stuck in a thread where no one exist anymore, and some informative, best practices, etc does change over time.
But ... some things never change, and I think it’s important to have access to older threads - I guess the similar threads section is just a little annoying for me.