when somebody shares one of my old tutorial posts

Some of your tutorials are still bookmarked in my browser 🙂.

I don't consider myself much of an established author among the other big names you mentioned

It is your modesty that speaks 😀

Each author himself decides how often to publish. When you post less often, your posts seem more valuable. You don't want to miss a single one, because you don't know when the next one will be. But times change and I'm sure I'll see your posts more often someday 😉