I have no idea about this page, but Theori/Xint has a staff of veterans, they are a serious thing.
The fact that they have no idea RHEL 14, probably the most well known enterprise distro, is not a thing, and yet they "directly verified on it" casts some doubt on seriousness.
Dropping a public exploit on github before distros have patches available isn't very cool, or is that just how veterans roll these days?
The fact that they have no idea RHEL 14, probably the most well known enterprise distro, is not a thing, and yet they "directly verified on it" casts some doubt on seriousness.