I am very worry about new merit system. This is like killer rules for newbies like us. As i know that if somebody gives merit rating only then our rank will grow. Without getting merit from someone we can't rank up from jr member. So, who will give us those merit rating? Is this rules for avoiding new comers in bitcointalk? I am truly feeling too bad.

Depends on that newcomers. If they come here "only" for the money, they will surely cant stand the merit system and will leave the forum eventually. But if the newcomers come to here to find knowledge about bitcoin and cryptocurrency and make "finding money" as their last purpose, they will be fin with it, in fact some of them maybe will embrace the merit system. The main purpose of merit is to fight spammer and shitposting, so if a newcomer feels merit is hard and bad for them, maybe because they are the spammer or the shitposter.