Well, their point has much more substance than your "this is ad hominem" slur since the blog author didn't disclose that his opinion piece is directly tied to the business model of his startup (and therefore wants to sell you the solution so they are clearly biased). Some people may therefore feel deceived.

> blog author didn't disclose that his opinion piece is directly tied to the business model of his startup

You mean other than stating in the "About" section of his *blog*?

You seem to be confusing blogging "standards" with conflict of interest disclosures for research publications and see a problem with founders being subjective by actually having an overlap in their beliefs and their companies.