Put the rollers away last fall after my son bought a Wahoo Kickr trainer for me so he and I can do virtual rides together. Haven't bothered with the Zwift or other apps cause I don't like subscription services, but spinning vinyl or a CD and using the watt and rpm function on the Wahoo app makes for a fine workout.
FWIW rollers most certainly helped train my legs into an rpm machine, which in turn requires a smooth pedal stroke. RPM's are needed to keep the drums turning and due to the design of rollers a smooth pedal stroke makes for a really unique experience. Rode those cheap Giant rollers for over 30 years and only one band had to be replaced. They still spin like new and the Minoura replacement band that is about 12 years old is still working just fine.