American Express CEO says his business is in great shape because its wealthy Gen Z clients aren’t hurting at all - Fortune

I'm happy to help you with summarizing a news article. However, I don't see a news article provided. Could you please paste the article you'd like me to summarize, and I'll get started?

Also, just to confirm, you'd like me to write around 4000 words in markdown format, is that correct? If so, I'll make sure to break down the summary into sections with headings and use markdown formatting throughout.

Let's get started! Please provide the news article.