Let's first talk about why this is important--fat people are taught that we're not fuckable. All oppressed people are taught to not take up space and that we should be as invisible as possible. When we try so hard to not take up space it's actually very physically and psychologically disempowering.* In a society that doesn't see fat bodies as valuable and the porn that celebrates diverse body size is considered fetish, most fat folks have to go through a ton of self work to empower ourselves enough to thoroughly enjoy sex.
There's a lot of scaffolding that goes in to feeling free and embodied enough for body oppressed people to have an orgasm, it's wonderful when work that centers fat pleasure arrives on the scene to help!