[imheretolearn]

> Building the same product with a different codebase is virtually guaranteed to be a disaster.

There is no point in going back and forth over this unless you have a real world example.

> This is the famous "second system effect."

[1] I believe you've misunderstood this effect. My understanding is that in the "second system effect", the succeeding system is not the "same" as the original

[1] https://en.wikipedia.org/wiki/Second-system_effect