Yes indeed.
Yes, we still have Devers, Groome, Chavis and Mata, but in DD's short time here, these are the prospects traded away. While it's true some have lost value since the trade, and much of their value at the time of the trades were "speculative", they held value nonetheless.
Highest ranking according to soxprospects.com:
1 Moncada (Sale)
3 Margot (Kimbrel)
3 Espinoza (Pomeranz)
3 Cecchini (Cash)-had fallen way down before trade
5 Kopech (Sale)
6 Guerra (Kimbrel)
7 Basabe (Sale)
9 Dubon (Thornburg)
9 Longhi (Int'l bonus space)
12 T Shaw (Thornburg)-not a prospect when traded
12 W Rijo (A Hill)
13 Allen (Kimbrel)
13 Light (Abad)
18 Basabe (Ziegler)
18 Callahan (AReed)
20 Asuaje (Kimbrel)
20 Bautista (A Reed)
20 Nogosek (A Reed)
21 V Diaz (Sale)
21 J Aro (wtih Wade Miley for C Smith & R Elias)
24 Pennington (Thornburg)
30 A Wilkerson (A Hill)
40 Almonte (Ziegler)
n/a G Santos (A Reed)
DD got some top talent for these guys, but the sheer number trades is mind-boggling.