able to make points worth listening to.

Make again implies creation.

Repeating cogent points is not automatically useful; an anti vaccination campaigner too can repeat some cogent things (for example it is the case that some vaccine preservatives really are toxic); the issue is in which things he chooses to repeat, and the unknown extent of cherry picking easily makes one not worth listening to (given that there is a huge number of sources to listen to).

The presentation of MWI issue is very biased and one sided. By the way, I have nothing against MWI; if I had to pick an interpretation I would pick MWI. (unless I actually need to calculate something, in which case, collapse as early as i can get away with).