[1]https://www.wsj.com/articles/amazon-says-it-has-over-10-000-...
In a lot of ways, it doesn't really matter why they're not producing results, so much as the fact that they're not producing them. I mean, check out the list of remaining action items in their last "Production Update"[1]. This came over 8 months since shipping what were supposed to be the Mark II devkits, and almost four years(!) after they announced work on the Mark II in early 2018 [2], which has since gone through about a zillion different design changes. I won't claim to be an expert, but having had even a bit of experience with product development of this kind, this is not the happy path to getting consumer electronics shipped.
[1] https://mycroft.ai/blog/mycroft-manufacturing-and-product-up...
[2] https://mycroft.ai/blog/specs-new-voice-assistant-device-see...
On the flip side, I do not, I repeat, DO NOT recommend giving their team money for pretty much any reason. They've been struggling to put together any working hardware (and promising the opposite) for years through a genuine comedy of errors. I think the most recent design iteration of MycroftV2 is something like a Raspberry Pi on a daughterboard in a 3D-printed case. I still check in on their blog and subreddit every few months to see what's changed, and everytime I'm rewarded with additional details on what seems to be one of the most incompetent engineering organizations I've ever heard of.