Why does large girth equal slow length gains?

I read somewhere (in this forum) that length gains should be prioritized before girth gains because the former decreases as the latter increases. Is this true and what could it depend on in that case? Intuitionally, I would claim additional tissue has to be created (and repaired), thus slowing down length growth. This would of course imply the reverse: a long penis thickens slower than a shorter one. What are your thoughts about this?

This is one hypothesis, but it is not universally believed in. The theory is that a larger girth means more penis to stretch which suggests a more difficult process.

The reality is that everyone responds differently. Some members who focus on length activities will also have girth gains, and the opposite is also true.

It is my belief that one needs to learn and understand how their penis responds and adjust their activities to match their goals while considering how their penis responds.