It first showed up on amazon.com for me yesterday. I found an article that mentioned it popping up on there from like a month ago, so they might be doing a slow roll-out or something.
It's basically just an AI chat window that pops up on all of the product pages. I thought it was pretty obnoxious.
Reusable pods do exist, and they're not even an inconvenience to use: you just pour some grounds in and stick it in the machine. It's unfortunate that no one seems to bother with them (and that this article doesn't mention them as an alternative.)