Running through this in my head again and again, and editing 500 times along the way, apologies. I'm done now:
You believe that it is narrowly true gravitational wave researchers did this, like a kid saying they "wrote their essay" in response to whether they "did [completed] their homework"
I believe it is wholly true.
I believe we agree on the narrow truth that they are gravitational wave researchers.
I believe we disagree on the wider truth.
I believe you believe its a wider lie, in that it indicates they used gravitational wave-style techniques in this endeavor.
I believe it is widely true, because they're using the specific techniques that I saw astrophysicists use in grad school.
Is it possible you saw "Bayesian", assumed that was the extent of their expertise applied, then noted that it has no relation to their expertise, since that's entry-level stats, not physics?