Gruber also posts more now than in recent memory political observations and commentary. As he's gotten older his blog has expanded beyond just the Apple scene.
While I've always felt DF got insta-banned by fanbois of other tribes regardless of the content of his posts (which should be discouraged here in some way imo) it's quite possible he's got folks on The Other Aisle that insta-flag him simply because they don't like his political views.
If that's what's happening, or it's due to a decades-long disagreement with his taste and views regardless of the posts being submitted, that feels like unwarranted censorship that goes against the grain of HN's guidelines.