I'm skeptical of this statement. It seems to rest on many unreliable assumptions (e.g. at a busy company, it seems that a team lead may know better than the CEO when his team needs additional resources to deliver).
Other than that, I love their approach to interviewing: casual, asynchronous communication.
When people are actively seeking a new role, they may not be the best version of themselves. They may be stressed, feeling frustrated, dealing with a life event, and attempting to conduct a job search on the side. This gives such candidates a better chance to be able to put a better foot forward IMO.