If someone doesn't care enough about my time to compose a well-written email, with a tl;dr at the top if necessary, then I see no reason to care about what they've generated.
Really, the format of your email is dictated by the business norms of communication that you operate in. If your norms dictate that your emails must, say, be written in an extremely overwrought and formal manner that massages egos, then LLMs to generate and summarize might be the technology that brings efficiency while upholding these norms.
Speaking to the performative importance of cultural norms, many workplaces would not look kindly on certain white-collar roles if they wore a T-shirt to the office; even if it is more efficient, or comfortable to wear the T-shirt.
I strongly agree. This echoes the cartoon about using LLMs to write and then summarize emails (https://marketoonist.com/2023/03/ai-written-ai-read.html).
If someone doesn't care enough about my time to compose a well-written email, with a tl;dr at the top if necessary, then I see no reason to care about what they've generated.