Anybody that thinks he's made hard claims are mostly just suckered in by trash pop sci articles that spins what he says into ridiculous headlines/articles like "Loeb says there's UFOs on the ocean floor!" to get clicks.
Ironically, the very article that was linked here makes unscientific hard claims: "The seismology data used to locate this meteorite wasn’t due to an impact, but merely a truck passing near the seismic station". That's a hard claim. There's no "we think the most likely explanation is X" or "the data is better explained by X theory". The paper the article links to as "proof" also makes no hard claims but merely says that they think the data "suggests" a traffic based origin better explains the data. The article itself is the definition of unscientific and everything they're trying to pin on Loeb.
[Edit] The paper which claims the traffic-based origin also has a grammar mistake in the very first paragraph, so I'm not very enthused about reading further and seeing how methodical their methods were, when they couldn't even manage to write a one paragraph summary without error.