You can't make these argument against the position that all these problems will be solved. Any problem you point to, someone would argue that an LLM can solve. Expensive compute? costs could get 1000x cheaper. Longer context gets worse output? Newer models would solve that. Ever increasing massive codebase? We'll get a 1B or a 1T context window. Time spent in test runners? parallelize, or selectively select tests, or even better; ask the LLM to optimize the tests or develop a 100x faster chips. Runtime cost of extraneous abstractions? Ask the LLM to keep functionality and focus on performance.

If you seriously believe we have "solved coding" or achieved AGI in coding, what is not possible? Any argument you can come up with will be easily dismissed with "we'll just ask the AGI to solve that problem".