They didn't dwell on why they chose C over C++, in much detail. In my view the conveniences and quality of life features provided by c++ makes it a better choic

They didn't dwell on why they chose C over C++, in much detail. In my view the conveniences and quality of life features provided by c++ makes it a better choice than C for large programs. Also there are many kind of games that do not require a real time user interaction including many turn based games, card games, etc, so the type of game could be a factor in the selection of the tool. Some time s I guess game design can incorporate pauses and delays that might be required for technical reasons.