Belicheck the GM isnt that great
Yes i know all those super bowls are great but he did it with a QB who took "paycuts" every year and played for under market value
Recently, no, not really. Especially drafting.
But to sum his career up as a GM as "isnt that great" is pretty crazy. Although I think you were just trying to say he isn't infallible with a golden Midas Touch rather than dismiss his career.
He has done some very sharp things over the years. He understood teams were paying guys in that age 29-32 range based on past performance and you had to be cutthroat on when to get rid of them rather than pay them for their next deal. Early in his run, he realized teams weren't valuing 3-4 defenders as much as 4-3 guys so he switched the D to 3-4 and built the defense off that. Later on, he realized TE's, slot WR's, receiving back specialists were undervalued compared to WR's/RB's which helped build the 2nd stage of the run. You could go on and on. He also signed the subject of this thread, Stephon Gilmore, who ended up being 1 of the best free agency since the NFL went to the salary cap era.
This shit is hard though, that is the main thing I'd try to tell people and what I'd say in the TB/BB thread. To constantly find edges like that and to constantly identify talent better than 31 other teams that have the same financial resources as you is damn hard. Look at Seattle, they reeled off 4 all-world caliber defensive guys in like 3 years and I'm not even sure they've drafted 1 pro bowl caliber guy since. Examples are endless. The game of football and football management is filled with volatility and variance.