Are you a member of a team? Then you are the outsourced intelligence. Your manager is not writing everything by hand, they are outsourcing it to you. Just understand that may change (I mean I am already mentally prepared for it to be a thing of the past within years). If you are purely writing software for hobby/fun then disregard, nothing will stop you from doing that.
I have no problem with other people outsourcing their intelligence to me, I've been doing this for years. But I prefer not to outsource my intelligence, at least not for things I care about, for various reasons.
Do you use an operating system? What about databases? Or the myriad of other software used which we build upon. I can't imagine a professional coding context where we don't outsource intelligence to some degree, if not a major degree. We stand on the shoulders of giants as they say.
Well, as as SWE who writes code by hand and has no intention to outsource their intelligence to any entity, I felt slightly offended by "back".