I'm not sure I understand what your opinion actually is? What you've stated is a fact, not an opinion: that's what the web platform is now. So it really makes no sense to rant about that, in context. You say you won't be advising him of that, but you also seem to be arguing in favor of advising him of that, not against, and are in fact already somewhat doing it already, so it's not clear what you meant there. It may benefit to be more consistent here, and make the advice to him anyway.

What would make more sense, and be more valuable, would be to talk about what value was actually taken away, and what steps could be done to provide that value again, without taking other bits of value away in the process. The blog post, as it's written, only argues for taking more value away. So I didn't find it convincing towards that end, and it seems you didn't either, as per your GP comment. So I'm pretty confused by this follow up response.