I am not claiming this, this is how things work in the logo design industry. There are of course copyrights, trademarks and legal matters, but there are also professional ethics. Ideas and concepts are getting recreated all the time, that's life. But it's also why people post sketches and ask if anyone has seen anything similar, only to discard them and move to another concept.
As such, why not just leave the logo of Tox in peace? Especially since it's a FOSS project with noble goals (even if they have yet to reach those goals, which is not surprising considering how early in the development the entire project is) and not some commercial entity intending to profit off of it.
I have plans for it. It wasn't just an idle doodle.
In this case, the products/ideas are straight-up competitors.
Oh wait
This isn't competition. It's complaining on a professional level.