This was confirmed by multiple people on the other site.
From memory, someone posted that they went to her meet and greet and made a nervous comment that she hadn't worked out recently, and Sarah responded something to the effect that this fan was lazy and didn't have any reason not to workout. Sorry I can't get the original quote for you, we have 16 threads over there and I can't recall who posted it or when.
If that user has moved over here, they can explain in detail.
There were other posters who said she was dismissive of them at her meet and greets as well.
Someone who went to her YT cooking demo thing (some convention for YTers where Sarah made smoothies with Tropeaka powders) said Sarah made a "joke" about this fan not having abs, and she (the fan) felt totally triggered by the comment and started a very strict diet as a result. I think this comment was on an early YT video of Sarah's but I can't remember which one as it was a couple of years ago now.
I also once also got a DM from one of her former fans (this was maybe a year ago) when I posted a long rant about Sarah on GG.
The fan is a very fit Aussie girl and she went to Sarah's first ebook launch, and she said Sarah ignored her and avoided taking a picture with her, and she felt it was because her body was as lean as Sarah's. Basically she felt that Sarah's competitive side took over and she didn't want to be seen next to someone fitter than her.
There are many others who posted on GG, saying they saw Sarah in Blackwood Pantry or on the beach, and she would quickly hide behind her hoodie and scurry away when they tried to say hello, like she thinks she's too good to mingle with the riff raff. How heartbroken would you feel if your idol did that to you?
Sarah herself made excuses for her most recent meet and greet- something about ice cream/ lollies on the beach. And even before she attended she said she could only stay an hour because she had to breastfeed Fox, when in reality, we had seen she had switched to formula feeding him already, she just didn't want to spend time with her fans.
It's a shame she treats her fans so badly. Particularly recently when her and Kurt said her fans "should shut up, they don't understand and are stupid". That was in her insta stories rant as a response to comments that she is making all the decisions about the new house and isn't giving Kurt any input.
Sorry this was such a long reply, but I never make a statement without a reason. There are receipts of these instances on the older threads.