I can get a lot of views here.

At one hand, it's true no other criminal organization in North America even today has the reach the Mafia has. The FBI still designates them as the number one noteworthy type of organized crime.
Historically speaking no other criminal organization will ever achieve what LCN achieved - it was a "right time right place" situation. All of those other newer "crime threats" that were supposed to supplant LCN never actually got to their level. Not the "Russians", not the Albanians and, no, not the cartels. I mean, not even close.

On the other hand, when people are questioning whether LCN is still feared, they do have a point. Mess with a street/prison/biker gang member of a certain stature - whether they're Black, Hispanic, White Supremacist, Asian... - someone's gonna come knocking on your door to rape your wife and smash your kid's skull with a bat before they get medieval on your ass. That's the reputation these gangs have. The Mafia on the other hand...people are asking all that time whether they're still around. Of course they're still around - and they still have more money and resources than your average joe realizes - but still they're regarded as a relic of a bygone age. Their name isn't on the streets any longer.
Sally Daz got killed without any repercussions. Frank Cali got killed...no repercussions. Informants and rats are living the life and having a ball out in the open without fear of getting whacked...
Sure you can argue that LCN doesn't need the heat, but situations like these don't do much to change the fact that the street reputation of the Mafia is basically non-existent nowadays.