I'm sure this is a very elementary question, but I'm not sure I fully understand the rationale behind locking a topic.
I realize this action will disallow any users from adding more replies to a topic in the future... but what are the underlying benefits of doing this? If someone in the future wants to add a legitimate reply to an older discussion, why prohibit this? Especially with evergreen or evolving issues that warrant ongoing discussion, why lock future responses out of it?
Is it to discourage spammers?
Does locking a topic make it a noindex page and exclude it from Google search results?
Just trying to understand the full consequences of locking a topic, so we can determine if/when we should be doing this.