I don't see Sapphic mentioning Duty Finder anywhere... and I looked, as I was somewhat confused.
There's nothing wrong with people leveling off FATE's, nothing at all. What is wrong is FATE's ending in 10 seconds because they don't scale up high enough, and that everyone's goal in the FATE is just to tag everything for enough damage to get credit. Nobody cares what's going on in the FATE, because nobody needs to: just do enough to get credit.
This all strikes me as poor design, hence why they're trying to fix it. I'm not going to say that they've succeeded, but better then just leaving things as they were.