Saw that article as well, SinatraClub. Interesting how the media keeps referring to him as a "reputed mobster" but doesn't specify his ties to any organized crime. Seems like it's a case of clickbait, perhaps.

Found this excerpt in another article:

DiMattia’s passing came just two months after he was finally out of the clutches of federal officials who controlled his life for the last six years. In the end, the former high school sports star couldn’t outrun his past legal scrapes, including a 1990 manslaughter conviction, and rumors that he was a made man.

“He talks a certain way, walks a certain way, is a tough guy and his name ends in a vowel,” said defense attorney Jerome Ballarotto, who represented DiMattia several times over the last two decades. “I have represented made guys. I know what a made guy is, and I’ve seen no evidence whatsoever that Mickey was associated with any organized crime families.”