I wasn't advocating writing extremely rigid, non-extensible code. I was alluding to unnecessarily abstract code bases where e.g. there's a class hierarchy with

I wasn't advocating writing extremely rigid, non-extensible code. I was alluding to unnecessarily abstract code bases where e.g. there's a class hierarchy with 7 classes when in fact 3 would properly describe the problem domain. Some people get really carried away coming up with abstractions and in the end they just write a lot of meaningless or purposeless code.