This might be a very naive take on my part, but I don't think of vibecoding as a competitor to actual coding the same way I don't think of doing amphetamines (even if they make you more productive in the short term) as a competitor to being clean. I think it's a self-destructive behavior that is ultimately going to degrade your critical thinking skills, especially if you're a beginner. As with everything, the smarter your tools, the dumber you get. People often claim to acquire "higher level thinking" skills from it (as do meth users), but even if that's true, they are also currently teaching those skills to the very tools that try to replace them.

The question is why would you fare any better if you don't use it. I don't know how it will play out, but this much I know: I will never pay for AI music, because I can replicate it for free. I'm still buying music from real musicians (in fact tons more than ever before), because I can't. Similarly, I have contributed to many FOSS projects (both financially and in PRs), but will not (knowingly) do the same for the ones that are vibecoded. Whether that will amount to anything or is just a fart in the wind, we'll see.