This past season the Yankees received more production from their farm system than they did in any year since Robinson Cano and Chien-Ming Wang arrived in 2005. And because of that, they’ll take a hit in the various farm system rankings next spring. Top prospects Luis Severino and Greg Bird graduated to MLB, as did the since traded John Ryan Murphy.
When you lose two high-end talents like Severino and Bird to the big leagues, your system is going to take a hit. That’s life. You’d rather the system take a hit because of graduations than failing prospects, and in recent years the Yankees were dealing with too much of the latter.