Doing coding professionally already stripped nearly all the fun out of coding for me years before AI got good at coding, so when it comes to "how fun is it to be a software engineer", AI didn't have any negative impact for me. Being a professional software engineer was already extremely boring. Cycle after cycle, ticket after ticket, feature after feature, meeting after meeting... constant blur of meaningless shit. Not totally meaningless - it delivers actual value for customers. But meaningless for me.

If anything, AI has made it more fun simply because it means not having to think as much about the drudgery of details: syntax, API schemas, boilerplate code... And by "more fun" I mean "somewhat less unfun". Cause it's still not fun. But AI makes my burnout somewhat more tolerable.