I wonder if it will actually respect the robots.txt this time.
I don't think it should. If a user asks the AI to read the web for them, it should read the web for them. This isn't a vacuum charged with crawling the web, it's an adhoc GET request.
It's a search engine. You 'ask it to read the web' just like you asked Google to, except Google used to actually give the website traffic.
I appreciate the concept of an AI User-agent, but without a business model that pays for the content creation, this is just going to lead to the death of anonymously accessible content.