That was a quote from the answer. Anyway that's my opinion, and I'll let the community do the rest. For me it was a very valuable answer, and it would be a pity if it would be deleted. If closing is standard practice to archive questions, then that's a possibility with which I won't disagree. However, I'm strongly against a deletion.

"Closed questions can and should be edited to improve them and address the reasons why they were closed in the first place." As far as my understanding of that statement goes, questions get closed because they are in one of the categories of questions that may get closed, meaning they can be deleted if not modified.

Closed, unless edited for reopening, is a road to deletion, as can be read here: meta.stackexchange.com/questions/10582/…. While I agree that the question is outdated, I'm still convinced it is of great value to new users.