The biggest problem in these kind of products is not implementation but trust.
The home page says that everything is private etc etc. Whatsapp also made similar claims before they were acquired, then suddenly these things didn't matter.
If this gets critical mass, what's stopping them from selling out. Bonus if they "accidently" started tracking users between update v4.2 and v5.2. Also, the TOS magically changed overnight.
The sad part is if they didn't sell out, they'll be buried under lawsuits and eventually banned. Just like KATorrents, yt-dl, Internet Archive, Dread Pirate Roberts etc.
1. https://www.businessinsider.com/suspected-kickass-torrent-ar...