That's a very misleading statement, for people not familiar with SF teams. A group of E7s and CW3s with 15+ years in and multiple qualifications are going to be very competetive with a fresh O3 who can't lace his boots without the Team Sergeant JMPIing them.
Officers aren't there to really lead an SF team. They're there to gain experience, before being shuffled off to a different rotation. SF teams are NCO teams, lead by an E8, and those NCOs have skills and qualifications that earn them quite a bit of extra money. The officer is basically kept in tow for paperwork purposes, and for liason work.
Other militaries don't understand our NCO structure, and won't listen to somenone who's not an officer. In that regard, many 'team commanders' are simply there as 'translators' for the team sergeant. An important job, but if you've ever been on or worked with an SF team, you know that the commander is the least skilled, and most expendable asset the team has.