Indeed.
Additionally, we have been mediocre for nearly a decade now. As mentioned, we haven't played a conference game ranked come January since 2014. That's a frigging long arse time. These recruits are well aware of what we have been/are present day. It just isn't that attractive enough to lure these highly ranked recruits anymore.
Moreover, what kid today honestly wants to go play for a stubborn, set in his ways, crotchety 78 year old coach? I'm not just singling out JB relative to age, but it's not as if the 'old' type coaches are knocking it out of the park, etc. along the recruiting trail. Although, there's not any, not to mention many, of/near JB's grandfather type age. K/Duke is the the exception of course, but JB hasn't anywhere near the standing/stature, etc. of K. And, K is retiring after this season.
Perhaps, at first formally being contacted by SU, it piques a higher level recruit's interest, but in actual reality, that recruit is likely just being respectful, he's not seriously considering Syracuse. Furthermore, playing zone all zone and nothing but the zone so help us all is about as alluring as taking a trip to the Ukraine nowadays.