It’s more about the way it was phrased and presented. Just sharing publicly available facts with your community (or anyone really) is not a problem in itself, but the message does rub me the wrong way.

The message’s author is trying to present themselves as someone helpful and compassionate (‘I understand’, ‘I’m trying to help’), but at the same time, they’re one-sidedly setting a firm and short deadline (‘I’ll give you a day’) unprompted and suggesting the café owner strike a deal with one of the people they’re going to recommend. They might have written this with good intentions at heart, but it also wouldn’t feel out of place in a mafia setting (as in ‘do business with us, or else’), so it’s a hard sell.

If they really were compassionate and wanted to help, they easily could have suggested to get the owner in touch with some affordable artists and left her with time to mentally deal with the backlash and all. They didn’t need to emphasise how they were going to tell on her like they were about to launch a vendetta smear campaign or something.

I agree, they should've just shared it immediately without contacting the owner

HN needing an explanation of how protection rackets work is like looking up money laundering in the dictionary in Office Space.

There are no good intentions here. This is the mafia playbook through and through - "It would be a pity if something were to happen to your <insert valuable property or reputation here>".