Not on TFP it's not. For chlorine pools, TFP recommends a minimum of 30 ppm CYA, even on indoor pools or covered spas, and 30 ppm CYA requires a bare minimum 2 ppm FC level, with 4-6 ppm being the target level. Again, TFP recommended levels.
The "1 to 3" ppm FC is the pool industry level, which isn't backed up by science and often is either too harsh or not effective enough, depending on the user's CYA level, since the pool industry doesn't understand they are related, apparently.
After experience, I can tell you that TFP has this down and the pool industry does not, cause in my pool at 6 ppm FC I had a guest ask if there was chlorine in the pool, because it was completely unsmellable. I've never been in a public pool that did not smell of "chlorine", even though almost certainly it was 2 ppm or less FC.
Anyway, just an aside, back to the main topic at hand...