Steams policy to report the post:
"Note: This is ONLY to be used to report spam, advertising, and problematic (harassment, fighting, or rude) posts."
Could their post fall under problematic? Telling people not to believe information that is in their own terms of service, even though the dev post in the community wouldn't be legally binding in any way, or provide any protection the the user that this would or upheld in the future.
I'm looking for a reason to report the post. Any ideas welcome.