some people are saying that the technology on bob’s desk was too advanced for the 1960s but not really, in the 60s computers DID exist they were just big and bulky and small screened, which matches bob’s:
you could argue that some of the fashion isn’t very realistic to the 60s as some of the women wear pants, but women did wear pants in the 60s even if it wasn’t common. as for the mens fashion, it’s kinda spot on. the business suits with short sleeved button ups and skinny black ties, the turtlenecks, and for more dressed down looks wearing a t-shirt and jeans isn’t very unrealistic (and that little boy on the red tricycle, wearing a baseball cap, and chewing bubble gum is like classic 60s imagery)
some outfits were likely oversights and/or them not wanting the time period to be too glaring. the sequel looks like they’re going to be making the womens wardrobe fit the stereotypical 60s timeframe better, as you can see in the trailer:
the writer and director of the incredibles has even said that he based the film on classic 60s superheroes and comics like god guys please use google search, why would i lie about this