Yea all the quotes are contradictory to the goal of 'flexibility'. What's more flexible than being able to write the code that does the thing you want it to do,

Yea all the quotes are contradictory to the goal of 'flexibility'. What's more flexible than being able to write the code that does the thing you want it to do, rather than creating, then mixing and matching objects/abstractions that you very likely have a surface level understanding of? There's a huge misunderstanding of 'flexibility' within codebases. You can achieve 'flexibility' via the lack of programming rules. Yet objects/abstractions/encapsulations are literal rules applied onto code to achieve some benefit (less code, increased surface understandability, etc), it's less about flexibility. And the quoted systems feel like they have little benefit to one's codebase.