No you cannot become a merit source because:

1) You do not have the time to even read the official thread properly before commenting. I mean it is clearly mentioned that you need to be  "somewhat established" member here to be considered as the merit source. If you do not care about reading the official posts, why will you read the posts of other members to give them merits.

2) Another problem is that you have posted 69 posts here and have not got a single merit so far. This means that you are not able to make a quality post yourself. So how will you judge other members making such posts ?