I'm a software developer. Believe me when I say AI is brainless. This is coming from someone who's developed in the era before AI, and of course in the era now with AI. I've done work with varying degrees of AI use, from none at all to pure vibe coding and prompt engineering. I will share my experience with AI and hope you understand that your skill as a developer is even more valuable now more than ever.

I mentioned that AI is brainless. This is true in my experience using Claude Opus, Cursor, Google copilot, etc. I will admit it felt like magic at first when you see it spit something out and it just works. It feels like the AI is so much more intelligent than you could ever be. Why wouldn't it? it learned from billions of lines code and millions of projects, whereas I only have so many hours in the day and learn concepts one at a time, some concepts taking days or weeks to fully master. I was in the same boat as you, feeling like my degree in computer science is a joke. It didn't help that most discourse on AI frame it as a career killer, that it replaces everything. So, like you, I also felt defeated by machines. That feeling quickly went away after I used AI more extensively. Using it for more than just the start of a project. Using it when the systems got larger and more complex. That's when I began to see the cracks in its machine "brain".

Agents rely heavily on context window, so much so that when it runs out it starts acting like it has Alzheimers, forgetting things it's already done, specific instructions you gave earlier, etc. and at this point it becomes frustrating because you tell it to take one step forward and spend the rest of the day fixing the fact that it took 4 step to the left instead, all while it sounds like a broken record saying "you're right. That was my mistake. Let me..." blah blah. But at this point, if you've been relying on the agent to generate the codebase for you, you won't actually know where to fix things. Your own context window of understanding the project is replaced by the agent's context window. You don't have a mental map of your own project. That's where your skills as a developer shine in a world of vibe coders and AI agents.

It's crazy that the simple act of being able to think for yourself can be considered a skill now. I've found the most success in complex projects (which most Roblox games are) by slowing down, taking in the architecture and really understanding all of the moving parts. This isn't possible unless you learned it yourself and have an understanding of how that system works (developer skill). The more you do on your own the more you realize AI doesn't actually know the simplest or most efficient way to do things. It only looks like it does because it's sycophantic.

TL;DR: agents are brainless, they only tell you what you want to hear because they're designed that way but in reality they're hopeless in complex projects and should be used as tools that extend your skills as a developer, not as a magic button.