My view on this very feminist piece is that Winehouse wasn’t anywhere near as influential or impactful to music and other musicians as Nirvana (which is the article’s main point of comparison). Many other musicians and singers have come and gone (both male and female) and are not held in anywhere near the same reverence as Cobain, and that’s simply because they had no lasting impact.
I felt that the media’s treatment of Cobain and Winehouse both flipped the usual gender narrative, at least if what she says is true. Cobain was cared about and treated with concern while Winehouse was seen as a joke, somewhat like Gazza (British former footballer Paul Gascoigne, known for his alcohol-fuelled decline and very much left to it). I don’t really remember Cobain, but in the late 2000s it was clear that Amy was on a very self-destructive path and nobody was going to care until she wound up dead.