Actually, I think there are more downsides to sequential downloading of files
over BitTorrent and using Popcorn Time.
1. Sequential downloading is bad, especially for small swarms:
http://wiki.vuze.com/w/Sequential_downloading_is_bad
2. Depending on user's internet connecton, using Popcorn Time might be bad
for torrent health:
https://masterex.github.io/archive/2014/03/31/popcorn-time-maybe-harmful.html
Plus it uses sequential downloading.
Although these issues become less relevant for healthy torrents with big
swarms, they still pose important ethical implications (in the BitTorrent
ethics sense).
