Is mixing emit and enable in one vfx bad

You can write your topic however you want, but you need to answer these questions:

  1. What do you want to achieve? Keep it simple and clear!

I want to know if its bad to mix enable and emit in one vfx.

  1. What is the issue? Include screenshots / videos if possible!

My vfx designer said its bad to mix emit and enable in one vfx.

  1. What solutions have you tried so far? Did you look for solutions on the Developer Hub?

Tried asking my vfx desinger.