Why? They're saying they have people they believe are reputable. Again, reading into that to assume the commenter intended to say the banned account was sending out bad information violates the community guidelines of "plausible interpretation." Is it plausible that the commenter merely meant "Hey, here's some reputable sources"? Seems possible to me.

If one store goes out of business and I say "Here are two store that I consider reputable for buying the same things", that really doesn't mean I think the original store was not reputable.

The comment does not at all read to me as justification for the ban one way or another. It is a simple statement that there are sources the commenter trusts on the topic, with a referral to them.