"Are there more people whose work on a project has been taken away by AI bots?"

Yes. I've had 2 clients do similar to what you described, so I have stopped working with them completely (one of them subsequently deleted their production database).

Another agreed for me to do an audit where I found severe vulnerabilities, including anyone having admin access, being able to set their own price during checkout, leaking PII etc.

Another is doing an AI in business course and wants to recreate their app using "N8N and ChatGBT". Thankfully, they have heeded my warnings - for now.

I've worked for some of these clients for over a decade, so I have a very low tolerance if they chose not to trust my professional opinion.