Prob true in newer nano tanks like yours, but not in matured, bigger tanks. Some tanks have reached such a steady state tt you don't even need to feed your fishes. They graze off your LR either from algae or pods.
Cheato provides a safe haven for pods to grow because it's normally not accessible to fishes. They thrive in dark places and will hide within the confines of the cheato, and I don't see fishes swimming in and getting entangled in cheato, so prob tt's a good alternative to keeping a refugium or LR in sump to cultivates pods. In fact, I'm prob gonna float a basket of cheato in my main tank to cultivate some pods after my rescape to repopulate my LR after the shift.