I agree, i don't feel comfortable that Ark even gives them a chance to have a chat.
Best thing to do as Ark? Stay away from them, don't even publish the chat please just stop and trow away.
the AMA's that we hold in our slack is an Equal opportunity for information. If we get accusations of scam, we will always pass it along but we don't do the research ourselves. Once this info was passed along to us, we informed everyone in our slack about the issue.
Remember, we've done probably 10-15 AMA's in our slack, this one has been the only one accused of being a scam so our success ratio is still pretty good so far.
Just like all things concerning your valuable assets, do more research.
Love ya'll and happy trading and investing.