So really there is nothing "infamous" about Kodi itself, but various unscrupulous 3rd parties are effectively destroying it's otherwise good reputation by bundling it with unofficial piracy add-ons.
Of course it's bloody infamous for piracy. Noggin correctly states that Kodi has been hijacked, but that's how the general public associate Kodi with piracy. Same for Bit Torrent and other software which can be used for perfectly legitimate reasons.
There was a FB convo I spotted from a friend who wanted to know what to use to watch 'free' movies. While there were a couple of streaming sites suggested blocked by the main ISPs, Kodi was the most suggested. "You can get everything on there" one replied.
I like the software and use it myself on the Fire Stick and on my PC, but lets not beat around the bush, it has a reputation and Kodi itself can't distance itself from it, despite it's good intentions, however much they try.