Drip irrigation

The drip irrigation setup

Although I didn’t go quite as complicated as this guy’s set up, I installed a similar system recently in our garden. Now I have 4 or 5 sprinklers coming on down our side garden at 6am, with a bunch of drips on other plants where they’re needed. Really flexible.
I’m a bit worried that I don’t have the “back pressure reducer” or the “filter” in my system. Should I be?