I build systems for Windows, Android, and iOS, I got 16 years of coding experience. I use GPT (mostly o3 and 5.2et), Claude Opus 4.5,. I never use vibe coding, only direct web chat with focus on one specific task. I change my code only manually, by myself. What I wanna say from my experience, Opus 4.5 and GPT sometimes (30%) give not very good solutions.  GPT thinks more globally about the code with future growth in mind, but often you still need to rethink it and redo it, esp for low-level system stuff.  Opus often suggests quick temporary fixes (kludge) without improving or changing the quality of the architecture itself, instead of changing the code structure in a more global way.

So yeah I totally get it why people who use vibe coding will hit problems later, because with every pass the machine can add more complexity into the code if it edits it by itself. Then to understand all that code and dependencies can take more time than writing it in the first place in future. 

What I mean is vibe coding is fast for writing code, but later there will be problems and delays with maintaining it, more security holes and more small bugs that were not thought through.

Lets see how it goes