The article seems to be written from a perspective where integration and unit testing don't exist. IMO the main advantage of monorepos is that you can have end-

The article seems to be written from a perspective where integration and unit testing don't exist. IMO the main advantage of monorepos is that you can have end-to-end tests within the same project structure. In that case you wouldn't need to do these incremental changes hoping things don't break in production, because your test suite would prove to you that it works.