It is OK to pick someone coin, without his consent? I think NO. 
lol...actually this is the whole point of decentralised cryptocurrency.
Yes. Without his consent.
Quote
Aeon is an experiment whether open-source practices would work well with cryptocurrencies. The developers strongly rely on the community to decide on further development and services integration. Aeon's goal is to make CryptoNote simple and accessible for everyone.
https://cryptonote.org/coins/
https://cryptonote.org/coins/