After how the Paxis scenario played out I wouldn’t be too quick to dismiss this considering how much of an open book the TROS production has been.
I mean, I’m late to the Praxis stuff but it seems like all of those leaks were related to what happens in the film itself. This “source” claims to have a bird’s eye view of everything going on, including privileged meetings and the personal opinions of Disney execs, JJ, and the cast and crew.