The first issue is closed with a nicely written message of how hard tabs will be supported and why they aren't now. The second issue links to the first issue when the point of hard tabs are brought up. The FAQ you link at the end contains, directly above the section you linked, a version of the explanation in the first issue, while the exact section you linked also links back to the first issue anyways.
So yes, all of the quotes and conclusions you found are either old or wrong according to the very pages you linked. No, it doesn't need to be updated (or prioritized?) as they all conclude with supporting tabs you just hadn't read all of what you're citing.
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If there is still any doubt for some reason rather than trolling through GitHub issues from 2017 I'd recommend sticking to the current FAQ from 2021 which has a section dedicated to this question: https://github.com/ziglang/zig/wiki/FAQ#why-does-zig-force-m... as this is the fully current and authoritative answer on the status of tab support, regardless of where bits of past discussion lay on the matter.
