I found about Mycroft through their Kickstarter project, Mycroft Mark II. What convinced me to back them was that they said that, theoretically, I should be able to self-host their server on my own hardware at home.
Unfortunately, they mismanaged Mark II so badly that I lost all faith in Mycroft in general.
I, too, saw the Indiegogo campaign and gladly handed over nearly $200 for the Mycroft Mark II.
Two and half years later, there has been little progress, with no telling when they'll actually deliver the device to backers.
It's one thing for a company to delay production to have lost money on this with no help from Indiegogo and a refusal from the company to refund backers, I have no hope for this product seeing the light of day any time soon.
That is the nature of crowdfunding. This is not a scam unless there is deliberate malice involved. A mere inability to deliver a product is not a scam. They cannot give you a refund as the money had been spent on development. If they had held your money so that they could now give you a refund, that would be extremely problematic.
Unfortunately, they mismanaged Mark II so badly that I lost all faith in Mycroft in general.