IANAL, but I believe you are misinterpreting the clause - the clause disqualifies an officer or 10% shareholder of (subparagraph G:) a corporation that is >= 50% owned by (subparagraph A:) a fiduciary (owner of the IRA).
That is the most convoluted interpretation of offering COBRA, and is almost certainly incorrect. You're referring to the fact that an employer can technically terminate COBRA by ending all health insurance plans. But Coinbase would have to stop offering any health insurance to all their current employees for this to occur. If that happens (I'm virtually certain it won't), there would be an actual employee riot/exodus and the tech media would be all over that story.