That's some bullshit man, it doesn't even make sense, a flowering plant is a flowering plant however auto's are known to be a lot easier to grow and a lot more hardy when it comes to nutrients, that's why they are marketed to noobs.
You fuck up a photoperiod plant in flower and it will most likely have the same consequences as if you fuck up an auto, you have to do more to fuck up an auto, I don't even think that's up for debate, maybe some strains are more sensitive then others but generally speaking auto's are more resilient due to the ruderalis and it's natural environments.
Please don't spread anymore nonsense bullshit about auto's because you had a bad experience with photo's or something. This is something that grinds my gears, lol, I bought into a lot of the auto bullshit when I started and it cost me a lot of time and money. Other's don't need to read your bullshit rant and believe it.