Not to mention that with each iteration the amount of tokens needed goes up substantially. Having worked with LLM APIs and their pricing there simply is no way that Cursor is breaking even on that $20 or $40 per month if everyone uses it fully. Not even close. This very much hints at the costs being hidden right now, subsidized if you will, by VC money.
Also, once you have brought junior developers up to speed and guided them they are now slightly more capable developers who can more easily on board on future projects. With LLMs you need to effectively babysit them on each project again.
And there are a lot more caveats, prerequisites and moving targets involved that make the promise and reality for many people and companies not something they can actually be met.
And again, I am not discounting that there are specific areas where people see benefits from using LLMs in agentic from. But those areas are not as ubiquitous as the hype train leads us to believe. And to start using them you need to set up a lot more in the way of infrastructure and due process as well.