I don't think it's interesting enough to write a blog but helpful/difficult enough that it should go somewhere, maybe as just a 5 line explanation and some code samples. I wonder if there is a site for infrequently asked questions similar to stack overflow but for people to document niche short things and make obscure links more discoverable with a gelbooru-esq tagging system. If that doesn't exist, I would definitely build one myself if not just to host my own collection of random snippets
There's usually a relevant Reddit subreddit. Include enough search terms at the bottom of your post and your solution will be discoverable. For redundancy, put it in something like a github gist as well. Also email or contact some of the people who previously asked the question.
Don't forget the internet archive.
Yeah, future hole rabbitters will look for that information on the internet, so make it available on the internet