Yeah. I mean, when you look at the Leafs roster from when he took over . . . the only players from that roster than have been significant NHL contributors since Burke took over are Grabovski, Kulemin (if he can return to form), Schenn, Kaberle and Antropov. The 4 goaltenders that split the Leafs net that season have seen a total of 3 NHL games in the last 2 NHL seasons - all from Martin Gerber - and all of 9 since being purged from the Leafs' organization. Of the players Burke moved out, only Antropov has put up a 20 goal season or a 40+ point season since leaving the team. And, the only notable players to come through the farm system onto other NHL rosters - Stalberg, Stralman and Tlusty. Heck, even the Leafs only really have Reimer, Gunnarsson and Frattin to show for what was in the system at the time (Holzer and Komarov may be added to the list, but, we're talking about guys who are likely to be a bottom pairing defenceman and a 4th line forward, respectively).
When Burke came in, there wasn't much to work with. JFJ left things in a mess, with no real high level prospects and an older roster, and Fletcher came in and muddied the situation in his brief time in charge. While I'll agree that the results Burke has seen have been underwhelming, I'm not sure I'd agree about what he's built (in an overall sense). The current roster is more talented, the farm system appears to be better and the team appears to be on the upswing. There are bright spots on the team now - that's not something I'm sure could be said before Burke took over.