As far as traditional kung fu training goes he's right. It's very important to have a conditioning routine to toughen up the body. By conditioning I don't mean the plank, situps, burpees etc but hitting the body to toughen it up and also to get the practitioner used to the pain from taking hits.
When I first studied "kung fu" 10+ years ago it was something I was interested in but we never did in class. I learned about it from CMA forums and the internet and made my own "kui sau" post from a meter long log, some rope and some duct tape. This I hung off a bracket on my garden fence and used it daily to harden up my hands, arms, limbs etc.
When I went along to my first Chow Gar SPM class some 5 yrs later conditioning was one of the first things we did. I was sold!
Conditioning is something that can be done alone or with a partner and there are loads of single and two person drills available from many different systems.
What I'm going to do is link to some articles and videos on the different types of conditioning regimes practiced in CMA.
It's also very important to remember that if you are practicing conditioning you will need to use copious amounts of Dit Da Jow (fall hit wine) as this will increase the recovery time and also help with healing etc. I will cover Dit Da in more detail another time.
A good article from Sifu David Ross of NYSanda:
http://nysanda.wordpress.com/2014/07/17/making-pain-a-friend/
Some Chow Gar conditioning and training drills: