You were talking to an audience of tech nerds, as was the original blog post we're all discussing. All of your counter-arguments in you original post were appeals to that base and merely suggesting that Gmail users outside of the Hacker News sphere exist doesn't really change that.
Given that, bringing up the needs of grandma and her family photos is a non-sequitur. We clearly aren't talking about that, more considering the wider effects of a tech industry having centralized control of and gating access to customer data and processing and the ways that has caused a lot of exploitation and enshittification.
But clearly you're avoiding talking about any of that, which is why the only thing in my post you engaged with is a bunch of handwringing that I misrepresented something you said (I didn't).