Yeah, things have moved on quite a bit in the year since that 101 thread started.
Spondoolies officially partnered up as Genesis' supplier soon after that was written and, of course, since then have been taken over by/merged with BTCS, AND announced the SP50.
How that will affect their relationship with Genesis is anyone's guess, especially as BTCS's CEO Charles Allan said, post merger
"The core focus post-merger will be to design, manufacture and deploy servers in BTCS’s data center(s)...
We are still discussing the possibility of selling equipment to certain customers."
Doesn't sound too good for Genesis to me.
Re: your point, obviously when a manufacturer says "X is a customer of ours", then X actually mining is likely, but you missed out this from your 101 quote:
(risk of fractional reserve mining)
and that's almost impossible to disprove for any cloudminer.