Disclaimers
I provide technical support for 2 companies - Bitmain and Canaan Creative. Neither of these contracts has any influence over company ratings.
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I don't believe this statement is true
Bitmain dropped 10 points when I became involved with them.
Canaan Creative dropped 3 points.
Spondoolies' rating has risen over the same period, even with the problems of under performing SP30 preorders.
I don't have a proof, but I think you know some stuff about Bitmain ethics which you refrain from taking into account.
I can't reveal what it is.