I guess there is a total differences between merits and like button. Because like is unlimited, anyone can press the like button if he/she agrees with the opnions of post without hesitation, however, the merits are limited, even for the merit sources, which leads the high-qualitied posts may not receive the merits,not because the post is not good, but it's not best.
Merits are limited but if you calculate, there are enough. For instance, if we count the total Smerits of current members, Sr members, hero and legendary it will be quite much. Every time they send it other users, that user will also receive half. Every month some amount will be generated from merit sources. Finally this can be adjusted if the moderator feels the need to do so in future.
It would be better if moderators can tell about total Smerits all the members currently have.