Will it hurt a one year olds development if the crib is used as a place to play with toys, turn cartoons on and shut the door as a way to keep them from under foot several times a day? My grandbaby's daddy does this and I don't like it. I never put my babies in their crib unless ut was bedtime or naptime. This bothers me and worries me at the same time. Am I wrong to feel this way?
The real worry for me would be the television. The American Academy of Pediatrics states that "young children learn best by interacting with people, not screens" -- meaning toddlers should be around people. Putting a toddler in an enclosed space (crib, playpen, baby-fenced-off room) isn't harmful per se, and I often will put my toddler in his playpen while I'm trying to do something else: cleaning, cooking, homework, or just taking a break from Mom Time. But leaving him alone there for long periods of time means he isn't getting time to socialize -- that's extremely important for a one year old, and he flips out if he's caged up and lonely.
Since this is not your child, though, you should probably approach it diplomatically -- mention the scientific basis for avoiding TV for babies, acknowledge that a parent gets exhausted by their child sometimes and needs a break, and then see if everybody together can find a solution that's better for your grandchild.
Every child is different and has different needs. Ditto that of parents.
My son did not like being left in his crib, and would cry and fuss if he was in it and not ready to sleep. He needed socialization quite desperately so even when he had to be penned up we kept him near someone.
My daughter, who was born when my son was nearly 2, is more introverted, and we find the toys-alone-in-the-crib to be enjoyable for her; she is unhappy if she goes straight to bed without some personal time with some favorite toys. She gets ample "social time" with her brother, and in fact when she starts getting towards nap time she gets very aggravated by him, so some crib time helps everyone's nerves.