First merit is not the hardest to get. As a newbie, what you need is to put a little effort and you will be rewarded with merits. What established members do is to understand the purpose the newbie came to the forum. If it is a genuine one, I.e to learn about bitcoin, getting merits will not be difficult for that newbie in as much as they can make understandable posts.
Instead, I can say that the difficult time to earn merits is when a user attains a hero or legendary level. The idea that such a user doesn't need merits again will partially be planted in the heart of merit givers.
Getting first merit is not the hardest but still this depends on the person, if the person focus on getting merit, it will be hard to get, when someone is desperate to get merit that is when the person will be rating any of post he/she made and that is when he/she we look frustrating. For someone to find it easy is when the person concentrate on learning and like to reading, this is when merit will be coming unexpectedly. Getting merit is easier for who is not desperate and difficult for who is egger to get it.
You have spoken well and it seems you know many things about the merit system which is very fine. When someone, especially a newbie has the mindset to earn merits in whichever way, it is always difficult for them to earn the merit.
But immediately you stopped making merit a priority and start learning and making posts that will help the forum and impact you as well, that is when merits will start coming naturally. But at a point when you are above the rank of a fully member, you need to step up your post quality in order to get fresh merits flow.
When I was a newbie, I started receiving merits from the first topic I created. Although not on the topic but during conversations.