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Custom CSS also means users can fix the designed-for-480p font sizes and paragraph widths, which the HN crew seem to have no interest in doing.

It won't fix the multiple "critical" accessibility issues[1] though, some of which require HTML changes for screen reader users.

Oh I agree. I'm sure if I was significantly blind I would never have joined this community.

That's more or less what I'm using as I write this.