I didn't read all of your post, as it is a bit long, but I did notice a few paragraphs, and I'll respond to those with some general comments.
This is an English board, and English is the lingua franca of the financial and commercial world. Even the EU is going to keep English as its primary language after Brexit. If you don't have a reasonable command of English, then you are at a disadvantage, that isn't the fault of Bitcoin Talk, it's a fact of life. Bitcoin Talk is great in that it recognises that many members without English as a first language, can be valuable contributors to the forum, and it has created a number of local language boards for them. It is an unfortunate fact that members with very poor command of English bring nothing to the more serious threads if they cannot be understood. It is even worse if the their attempted post is meaningless spam in reality. I, and some other senior members, have tried to help the more responsible members to improve their communications skills, but unfortunately, it seems that the bounty programmes attract users who are only interested in pushing out garbled messages to display their signatures. I called them 'users' because that is what they are, they are members or even part of the forum's community. They are just here to pollute and scatter rubbish to try to profit from the labours of the more responsible forum members. You only have to look at the lack of interest in concepts such as The Fit to Talk English project to realise how deeply embedded the bounty hunting concept is in Bitcoin Talk, and the lack of interest that its spammers have in the well being of the forum, or in the world of crypto and Bitcoin.
Merit was introduced as a barrier to reduce the potential rewards of these 'users', and it seems to be working. To be frank, if you can't achieve a rank above member in the time it takes to gain the required activity, then you need to question your ability, and your motivation. It isn't the fault of the merit system.