I agree that by one is the smartest, certainly in terms of teeth and speech development, but I don't think two or three is too out of the norm. You certainly see kids with them. I think mom is delusional if she thinks other kids are using pacifiers at eight.
My dad was a pediatrician. He told me to watch my kids around one for a time period when they seemed less attached to their bottles and pacifiers and to leap on that moment. He said if you miss that window they grab on tighter and get more attached and it becomes much harder to get them away. I found that advice worked for both my kids and it wasn't a big deal to transition them away from both shortly before their first birthdays. My boys attached to their blankies though. I set rules about blankies not leaving the house (except for overnight trips) after age two, but both boys slept with them throughout their preschool years.