In his defense, he was shooting a star trail. @10s per exposure, 6 per minute, becomes 360 per hour.

I believe 30s might be more appropriate for star trails which makes satellite trails oh so much more obvious. But that means a 2-3 hour session of 2 exposures per minute.

I also used to take hundreds of photos in meteor season - and having to diff between meteors and satellites was quite time consuming.

in photos, meteors and satellites do not look the same. satellite trails are consistent lines. meteors start small, flare in the middle, and then ends small again. they are easy for humans to distinguish, so i'd assume some software could do it as well