BitMex Research just posted an article about some of the allegations about the Blockstream Mining Notes (#1507952).

The BitMex article is largely inconclusive, but attempts to poke holes in some of the reasoning used in the natinfosec article.

BitMex's conclusion is:

While our view is that the article may contain some false and potentially misleading allegations, we still think its an interesting article and well worth a read. The article may contain information on some serious issues or failings from the company.

What we would say is that the supposed 20% yield on offer, which the article analysed in some depth, is a potential concern to us and perhaps requires further explanation from the issuer of the note. The Blockstream Mining Note and its possible financial difficulty, appears to be a topic that deserves further investigation and journalistic enquiry. However, the article may be too aggressive in linking the issue to BSTR.

Which moslty amounts to: don't get worked up about people and personalities, stay focused on the actual mechanics of an investment.