I don't think that's the sum and substance of the Sopranos (still the greatest drama in tv history IMO) and I was stating my opinion about Uncle Pete, just as you were. I think his suicide is meant to have some measure of mystery.

I may be missing exactly how it was shown that Uncle Pete knew, for sure, that Pete knew he had stood by and done nothing to intervene. At this moment, I don't THINK it was - I could be wrong. BUT, it would explain, at least to a degree, why that last conversation with Pete pushed him over the edge. And it would, of…

Maybe the best thing ever written? That's going too far IMO but he deserves the exaggerated kudos for the fact that he pulled this off at ALL, let alone so well

Also, the actor playing Horace VI was in Chinatown - I don't know how much this plays into it, but there's a lot of similarity in terms of how it ends [Horace had almost escaped, figuratively] and the music we've heard so many times [like the trumpet in the Chinatown score] proves at the end to represent huge tragedy

Pretty clear Sylvia wouldn't allow that to happenand that this is the end of the line

I think Uncle Pete was waaayyy too selfish to have that be the reason