Yes, I'd like to hear more of their background, because they seem very naive about writing software, adding to it, testing it, etc.
You can't just whip up a replacement for salesforce using claude code. Who's going to fix the bugs, who is going to have tests, manage performance testing? People will still pay for software that is tested and performant. I could get a replacement for an online spreadsheet, google docs like thing. Suppose you tell it to copy the google docs or whatever programming language. You won't know if it's buggy because you won't haev the same test coverage. You'll never know about bugs that took a long time to reveal in some combination of features.
You can create a new system with a few features together to do something. Again, not tested, not perf tested, isn't away of a compiler bug you had to work around.
But lots of simple things can be claude coded and replaced. Say something that took a photo of a person, centered it, then say put some kind of log on the pic. Something you paid $5 a month to do.