You’re good at rationalizing using stolen intellectual property.
From the looks of it I'd say you are even better at it than I am because, just about everything you've coded in your life is derived directly or indirectly from somebody else's intellectual property, yet in that above statement of yours you are not acknowledging that. You stole it fair and square, therefore it's yours, is that how it works ? When you do it, it's ok but, when someone else does it, it's not. I think I've seen that before and, not just from you.
You weren't born spontaneously knowing the things you know, therefore, every line of code you've written could be painted as "stolen intellectual property".
From what I've seen AI doesn't seem to simply copy code, it massages it. Whether it is sufficiently "massaged" to be considered "original work" or plagiarism, that part I won't make any claims because it is often quite difficult to figure out where to draw the line.
AI has just about all the faults a human programmer _can_/_may_ have. It's just a tool, the programmer is ultimately responsible for how it is used.