Those are great points and I absolutely agree with you about those things. But these are points I would address maybe in a discussion, after I convince him to take this seriously. For me personally “trust and transparency” are going to a huge part of society through blockchain, but this is not necessarily going to catch the attention of a CEO right away. As long as those two things are not the standard in business (which is the reality right now), you are not willing to SPEND money on something new and being some of the first (thus taking a risk with your data and investments) to adopt a new technology. You want to know if there will be a benefit for your company (financially, time etc) by optimizing your business processes.
I believe, like I said, in a few years maybe, trust and transparency will be the norm. But in this time, companies are struggling to get by, and they would be hesitant to at least think about adopting a new technology if this will only cost you money. You show him/her the numbers to make him/her listen.
Hope this helps.
(It was not your letter, I read the posts and had some fun on the video, hoping to get you all fired up to put in extra effort, for maximum benefit.)
For example in your message you talk about the global climate crisis. You might give some numbers on how smart contracts can optimise business processes to make sure containers would not have to wait that long to be shipped. Empty spaces can better be managed, and so much money and energy are wasted by inefficient supply chain processes, and by making this more efficient (think about the example I give with the 1 meter high paper stack being used to ship a container from Singapore to Rotterdam) you would have much less of a carbon footprint and save money.