1) "The retrograde orbital plane... of 3I/ATLAS around the Sun lies within 5 degrees of that of Earth... The likelihood for that coincidence out of all random orientations is 0.2%." Not sure where he comes up with 0.2%. 5/180 = 2.8%. (I use 180 degrees, rather than 360, because I suspect that if it were not retrograde, he'd use the same argument.)
2) "the brightness of 3I/ATLAS implies an object that is ~20 kilometers in diameter (for a typical albedo of ~5%), too large for an interstellar asteroid. We should have detected a million objects below the ~100-meters scale of the first reported interstellar object 1I/`Oumuamua for each ~20-kilometer object." Huh? We barely detected this object because it's so dim. Why should we be detecting interstellar objects two or three orders of magnitude smaller?
3) "No spectral features of cometary gas are found in spectroscopic observations of 3I/ATLAS." An article today (22 July, https://astrobiology.com/2025/07/spectroscopic-characterizat...) says "Spectral modeling with an areal mixture of 70% Tagish Lake meteorite and 30% 10-micron-sized water ice successfully reproduces both the overall continuum and the broad absorption feature... 3I/ATLAS is an active interstellar comet containing abundant water ice, with a dust composition more similar to D-type asteroids..."
4. "For its orbital parameters, 3I/ATLAS is synchronized to approach unusually close to Venus (0.65au where 1au is the Earth-Sun separation), Mars (0.19au) and Jupiter (0.36au), with a cumulative probability of 0.005% relative to orbits with the same orbital parameters but a random arrival time." This probability is harder to compute (although 0.65au from Venus is nearly the radius of Venus' orbit, 0.72au, i.e. not close). In any case, so what? Why would an interstellar probe travel close to Mars or Jupiter, if they're interested in Earth? (see next point) Later (his point 8), he says the probe comes close enough to these planets to launch ICBMs at them. Ok...
5. "3I/ATLAS achieves perihelion on the opposite side of the Sun relative to Earth. This could be intentional..." Sure, if they're interested in Earth, stay away from it.
And similarly for the rest of his points.