Developer marketing != valueless. Every single $B dev co you know has invested millions of dollars in developer outreach and content. It seems the issue is that there's no "technical details" as if a post titled "the hidden costs of serverless" would be about anything but
costs. Perhaps the original response expected "costs" in terms of technical debt - in which case, that actually is covered as well, making the criticism a little underwhelming.
If you don't agree with the article, that's one thing. Can you pick out anything in the post that's counterfactual? Look - I'm the CEO of a cloud product that, in some sense, could be considered competitive with Amiram. I've made plenty of upvoted HN comments and Medium posts talking directly about our company and what we do - hell, there's one posted here if you scroll down. I take a great deal of pride in it, and I'm very enthusiastic about the future of the space. It's for that reason I consider the criticism a little unfair.
If the criticism is simply, "be more direct with your marketing and assert yourself and your company" --- that's totally fine. But dismissing an entire article because it's actively providing advice and context because the CEO runs a company in the space (wouldn't that put him in the best position to understand the market?) is... well, like I said, kind of silly.
If the above is, in fact, the actual criticism - perhaps we should ask A Cloud Guru if they'd be more willing to allow promotional posts to feature partners and neat products. A big problem with content marketing (generally) is the people who control the flow of content often ask for pieces to appear as neutral as possible, where a huge chunk of motivated content producers are actually trying to push a product or service (platform, consultancy, themselves and their career, their open source, you name it).