Raul Marques’s review published on Letterboxd:
It's what it is. It's what it's gotten to. Sinful and sorrowful.
An eulogy to gangsters that interrogates the moral complexities of unwavering, soldierlike loyalty in an universe where double-crossing is the way of life and how by holding on to that noble subservience the most unspeakable violence becomes praxis, alienating its participants from everyone outside of it, including their immediate families.
The third hour drives this point openly, and it's remarkably poignant at that, but what really justifies its length and places it along a very select group of accomplished pictures (even within Scorsese's ouvre) is the incredibly thorough way it conveys the perception of the accumulation of varyingly relevant - yet always engaging - events that ultimately lead to a tragic end-of-life epiphany. DeNiro, Pesci and Pacino are truly extraordinary here, with the latter coming as more of a slight surprise, but there's also memorable moments from the numerous supporting cast (namely Keitel, Ireland and specially Paquin).
Schoonmaker is the greatest.