The reality is merit system has created difficulty for beginners as no one looks much about beginners
That isn't true. Most merit sources look at posts, and usually aren't influenced by the rank of the poster. The big problems for beginners are the fact that they dont read the rules and the posting guidelines, and that thay just chuck out any old comment regardless of it's relevance.
One bad post with bad formatting, or with a full quote of a long original post, can get you put on ignore. Once you get onto the ignore list of a merit source, then you have killed any chance of receiving merit from him.
Definitely agree that your rank does not influence the merit that you will receive. However, I witnessed some merit sources review your old posts prior giving a merit. Meaning, they will give you a merit not just because you posted a quality content but (will review your post) also if you posted quality content (from the past) consistently.