>The problem is introduced in Altman's case if (a) there was no disclosure (red flag)

The article says the investments were disclosed:

"OpenAI board chairman Bret Taylor defended Altman in a court hearing Monday, testifying that Altman had been “forthright” and “proactive and transparent” about his involvements in other companies. Altman recused himself from recent discussions about a deal between OpenAI and Helion as well, The Wall Street Journal reported."