Not wishing to put words in Foxi4's mouth, especially after he has already gone, but a lot of the N64 threads seem to feature people that accuse the N64 of being some unsung classic of a console. Before launch there was a lot of hype and people talking about selling their existing PS1/saturns (both of which had already been on the market for quite the amount of time) to get one, after launch it seemed "mario 64 and pilot wings are nice tech demos" which progressed to Rare made some nice stuff and finally a fizzle out. All the while the Playstation was dragging things out of the bronze age of gaming and into at least the iron age, made a load of games of equal or better quality, doing about as well on the innovation front as anybody could have hoped and basically pissing in the N64's face right throughout in every way that matters.
It seems to be a variation on Sonic Adventure syndrome where it was greeted with a resounding "meh"/that is not a good game and all of a sudden in the last few years people treat it like a classic.... I am not sure where such things came from and it marks a complete shift in opinion that had existed for years until then. Likewise nobody has really ever been able to qualify it that I have seen, certainly I have not seen any "this was where this modern mechanic started"