Why length first ?

Why is it I’ve seen people advocate to gain length first and to then concentrate on girth ?
I’ve also read that too much girth gains could hinder length gains.

Could somebody explain plz ?

Here’s a good previous thread. The concept is that its harder to stretch something with a greater diameter.

And (devils advocate mode), here’s an alternate view.

I do a mid 2 minute hot wrap right after jelqing before I go onto stretching as this also helps wash off lube from jelqing so I don’t slip off while stretching. Dunno if this is a useless waste of 2 minutes or not, but after 2 months I’ve had slight gains in both areas so I guess I’m doing something right.

I think any hot wrapping is good :)