What makes you think the person who isn’t using the search feature is going to read lengthy pinned threads?
I believe there are many reasons we see the same questions asked over and over (they want personal interaction, they believe their situation is different, it’s a super common issue in general, they don’t know the key words to search on and a bunch of sifting and reading would be required, etc.) and I’m not sure pinning will solve these issues.
My advice is to pass it by if you don’t want to get involved. If we’re pinning to be helpful or enrich the forum experience, great. If we’re pinning with the intent to stop people asking questions we don’t feel like answering again, I’m not sure it’s going to work or if that’s a good reason to start pinning things.
Finally, people change, new science emerges and what I would have told someone a year ago would probably be different now. Pinned topics can become out of date.
Opinions welcome.