.... borderline accusing a company of fraud.
For my part, you can leave out the "borderline".
"Fraud is a deception deliberately practiced in order to secure unfair or unlawful gain "They were and still are deliberately deceitful regarding their 28nm miners shipping dates and power consumption - if nothing else.
How does that compare to bitmine et al ? There is no hard evidence bitmine (CT/HF/BA/..) missing their target shipping dates was deliberate or expected for them. Unless someone comes up with evidence that shows they originally promised shipping in a timeframe that was not possible with their internal timeframes or what they received from their fab and suppliers, its reasonable to assume those delays were unexpected and unintended slips. Unless someone comes up with internal documents from HF and CT that shows they fully expected their chips to draw more power or perform worse than what they promised, its reasonable to assume those were "honest" engineering and/or simulation failures.
But we all knew the datasheets and timetables bitmine promised, yet for some reason, AMT thought it could get away promising >2x better power efficiency and promising to ship miners earlier than bitmine even expected to receive chips and continued to do so after bitmine publicly announced their delay. We all know they think their customers are idiots, but that is deliberate deception to secure unfair or unlawful gain. I.e. fraud.
NB; after all this time, AMT have yet to say a thing in this thread about their invalid and invalidated power consumption claims.