even the fear will be only like 0.5s with all the CC reduction she would have
2.25 fear after nerft
* (1-.35) for full tenacity
= 1.4625
pretty sure that's a lot longer than half a second
and fiddle is one of my old mains, and I still play him as a counter, and CC isn't as much of a problem as you think
the ult cast time is enough to let your team initiate and the enemy to try to counter it