I honestly think that most SJW artists are not drawing disguised fetish art. Labeling every woke drawing of a fat person as fetish art just avoids a reality that isn't even that harsh: SJWs are conditioned to be like this.
Amongst liberal artist circles there's a huge push for artists to draw forced diversity, people will point out "why do you only draw skinny people/white people/able-bodied people" if you don't. This is mostly done for ideological reasons. These people are very ride-or-die about their activism, and they're incredibly unforgiving to each other. Furthermore, there's a culture in these circles that if you're not LGBT in some way you're a bad person. I think that there is a sizeable amount of women who have transitioned because they're told being straight is bad, but I digress. This is also related to how SJW artists will draw forced diversity. If you don't draw fat people all the time (or non-whites, or disabled people, or queers, etc) in these circles, you are a bad person.
And yes, I am aware her profile picture is wearing a gimp mask. While I can't testify whether or not this specific person I don't know is passing off fetish art as woke, I think this is also part of the subculture modern SJW artists have. For a while, fetish-related imagery has infiltrated pop culture. But, beyond that, trannies kind of push it on to people and normalize it. These circles happen to be overrun with TiFs, who love to shove fetish imagery into everything, because they think it makes them more masculine. This artist might genuinely just think it looks cool, because of the people around her. All these people are just subconciously conditioning eachother into being gross freaks regardless if they're actually aroused by it or not.