merit (/ˈmɛrɪt/) :
noun
1. claim to respect and praise; excellence; worth.
2. something that deserves or justifies a reward or commendation; a commendable quality, act, etc.

So, no, you don't need to get lucky to receive merit, you need write constructive/good quality posts to receive merits.

You're right, looking at your post history, it'll take you decades to rank up. Best of luck.