Possibly and RAW it works but when you ask the question what is more likely.
A) Ghoul Patrol is special unlike everything else in the game which squashed taking units above starting size since the release of GH1.
B) It’s an oversight
I would say B is far more likely. I would also play it the conservative way as you don’t want people accusing you of cheating if an FAQ drops later.
But it’s your hobby so if you want to use it that way, I’m a big fan of people doing what they want with their hobby as long as it’s not insulting other players. Also FEC could always use a boost.