Yes, Talon having a silence attached to his E was unhealthy. In general, impossible-to-miss, hard CC on an assassin is bad balance. It was quite literally impossible to react to Talon's E-W-Q-R/E-Q-W-R combo, because all of them would land hits within a second, then he'd be invisible by the time the silence was over.
The only possible counter-play to Talon's combo was to not stand anywhere near him.
Fizz's E damage is avoidable, and you can force him to use it to avoid a weak spell, then land everything else. Or you can use CC, preventing him from using his E. His only CC is on his ultimate, which is not difficult to avoid.
You're comparing an instant, unavoidable, 700-range "You're fucked" button to a defense mechanic that has existed long before Talon.