They're just trying to justify illegal software. Like when people defended P2P file sharing as "but you can use it to download linux" or recently bitcoin as "but it's also great for transferring money internationally."
Please define "illegal software" in this context.
It's not great for doing anything illegal, and criminals get caught faster because they're using Bitcoin [1].
[1] https://mashable.com/article/dark-web-child-pornography-ring...
And most major Linux distributions do have torrents for their installation images.
Also more recently distributed technologies have been kinda morfing together with P2P, with PeerTube, IPFS, Fediverse and all the various cryptocurrencies.
The way Popcorn Time is advertised makes it pretty clear:
>No restrictions. Watch any movie or TV show as many times as you want.
>Awesome catalogue. If the movie or TV show is out there, Popcorn Time will find the best version possible and start streaming it right away.
It's pretty clearly about piracy. That being said, it can obviously also be used to watch non-pirated movies, and the way things are going with Youtube at the moment (censoring various videos on non-copyright grounds) could actually make PT a great alternative.