Easy question on this set up

I know very little about hydroponics but, in this set up I was wondering if the plants roots get cramped or will they be fine from seedling to harvest. Thanks.
https://www.rollitup.org/view.php?pg=faq&cmd=article&id=488

no the roots grow into the tube.That setup can be scale down or scale up.Well establish seedings or clones. Peace

Thanks man, I didn't think anyone would respond.
Take it easy.