Once upon a time, there were multiple repos and multiple tools for different jobs. Then Twitter grew to thousands of engineers, many of whom were from Google.

Once upon a time, there were multiple repos and multiple tools for different jobs. Then Twitter grew to thousands of engineers, many of whom were from Google. Now everything is being converted to enterprise Java in a single, monolithic repo. Is that an improvement or just bureaucratic standardization and cargo-culting from engineers raised in the google3 monolith?