One more decentralised exchange.. there are too many of them nowadays

Why do you think such exchanges gonna be successful? How are you going to compete with other DEXs?
There is no need to compete with them, cause there is no fully developed DEX right now.
All of them are just developing

But i'm in doubt that time has come for this type of EX

Decentralized platforms won't serve the users enough to satisfy their needs right now. Also there are many pitfalls.. Just imagine that you have 100 BTC on your account and you lose your password and private key.. Dex won't help you to recover them, so these btc will be lost.. However centrilised EX can do it )