It's likely Seymour at minimum coauthored that brain damaged pump-piece. Seymour may even have written the entire piece, and had his lapdog shill publish it under his SA alias.
All publically available,... just follow the links in the article,...
So no,... not much mystery how he got that information,... anybody doing even cursory digging could have done the same.
The motivations are also simple,.. sharing information and summarizing sources and counteracting some of the misinformation that is 'out there' about NNVC,... As a shareholder (as stated in the footnotes to the article) it is beneficial in the long-run to him to have an un-muddied description and review of the long-term value of the company available as well. Gives other interested investors in the market a place to start doing their own assessments.
And the small fee that SA provides to authors isn't a bad thing either. It ain't much - but is something.