I think you're entitled to your opinion, but want to point out that there's 2 different axes on the graph here. You are unhappy about LLMs' affect on your working conditions, but also concede it's inevitable and the labs are at least somewhat sincere in their predictions of it displacing a significant amount of the value in the software engineering market.

It's not necessarily a given that the person you're replying to agrees on the latter, and therefore they might not be stoked on you starting off by agreeing with them but going on to make an argument that supports the companies responsible for the very thing they're complaining about.

I think there's a contradiction in you stating that management thinks LLM-generated output is "maintainable". They went to business school, they don't know what that means. It's your job to explain to them the consequences of shipping code faster than the people whose job it is to understand it can do so.