David Revoy isn't a random artist on social media. He's a featured artist on Krita and creator of various Krita brush packs and tutorials.
None of these accusers seem to have done the bare minimum of Googling the artist's name before starting making accusations. I don't know if it's laziness or just lack of tech literacy that pervades the modern world, but it's very sad to see it.
Don't let it get to you. They are all saying things without thinking.
And he art directed on Sintel, which you couldn't get away from anywhere there was any discussion of Blender, being one of the largest scale productions in Blender during that era.
I remember seeing his Yin and Yang piece especially trending on deviantart maybe 2010 to 2012, he was really well known and no doubt his was among the material scraped for training models.
https://en.wikipedia.org/wiki/Argument_from_authority
It's called reputation.
I take it you dont listen to your doctors.
Do you think people just spawn out of nowhere the instant you interact with them or did they have a life before you met them?