To me the word scam is not the proper one in this context. Scam, is more the situation when a dev develops a coin just to dump it and disappear, which I believe is not a case here. I don't know the details of the deal, I haven't seen it, but maybe he wasn't offered the conditions that were acceptable - i.e., take over the project and keep it on hold till the end of the year. How would you call it then? I agree with you that we need more evidence that the meeting at all took place, that there was such a company, etc. However, there maybe also a confidence clause that he wouldn't be able to disclose the name of the company. What would you do in such a case?

Now regarding money, I haven't seen much dumping prior and in the moment of release of the note from the meeting, which makes me believe that the dev didn't dump his coins. There was not much support on the buy side, as people were mostly reluctant to the outcome of the deal. Those, who decided to take the risk (and were counting on big gains) despite many warnings, some of them coming from you as well, should be aware of the resulting risks, if the price tanks. The coin indeed lost a lot in its valuation, but that is what happens with all cryptos and that is what I meant with my statement that investors should only invest money they can afford to lose when the price drops as it did in this case.