That article is just more of the usual bullshit used to bash PHP, maybe to make authors like himself feel better about not using it, and have a good laugh with other bitter peers. Haters gonna hate.

The author is comparing Composer to Bundler, which makes no sense because Composer does a lot more than Bundler. With Composer you can do things exactly the way you want. He says "I don't know what it does under the hood, if it clones every single repository of every required package independently of it being necessary", proving that he didn't even bother learning how to use the tool.

There is no way you can live with Bundler after having used Composer. Trust me, I was a Rails guy.