Everyone has this sick obsession with Moeller technique... Thanks Jo Jo lol.
I do like Moeller, but only when it is applied to the correct playing situation, the whole three note stroke thing I think is just a glorified exercise to help you practice. Jo Jo Mayer was able to apply it well because he plays drum and bass or styles of music with lots of filler in between, enabling to utilise the three notes in one stroke action.
Moeller is great for some back beats if you're using Ghost Notes and It's nice for Jazz ride patterns, but I think some drummers get too obsessed with it... There are lots of other techniques or areas of drumming that should be focused on. Of course if you're lucky enough to be rich enough (or have rich parents) to not need to work full time and play drums all day then go for it...
It's a technique that is indeed used for accents and to allow you to get some dynamics in your playing and not hurt yourself when playing at PPP levels if you want to. but to go for really fast notes, indeed focus on your fingers and get them up to speed.