But shouldn't anything about Grok be flagged as political then? (or rather: where do you put the threshold?)

There is a big political aspect to Grok: it does not really bring much more technologically than any other model, its existence is mainly political in the first place. And talking about it / promoting it is participating to that: not everyone who does that does it for ideological reason, but a part of people doing it clearly does.

If only, but that won't work because a certain group considers dissenting opinions not as political but ethically deplorable speech and votes and flags it down while defending their own political stance which in turn is voted up more than down and remains in the threads. The result is a biased platform. Notwithstanding the article the bias is mostly (possibly performatively) "progressive" with some cave outs related to startup culture, venture capitalism and whatever PG has to say on the subject.