My older son was never interested in Cuddly toys but his younger brother adored them. He had his favourite Cuddly tiger in his bedroom until he was 20 and gave it to me when my DH died suddenly that year. Tiger sits on a chair in my bedroom with my late husband's Cuddly polar bear. I have my late husband's shirt under my pillow and do, sometimes hold it. Recently my little Teddy, who must be over 60 as he belonged to my late older brother, has "found" his way into bed. There is nothing wrong with anyone having an object that gives them comfort. I actually think it is lovely that a child, teenager or adult can draw comfort from a Cuddly toy. It isn't doing any harm.
