There are definitely a lot of scammers out there who cold read. I have been to a few and the scammers definitely are a lot vaguer and say things like "does that make sense to you", "do you understand that", "I have an older lady here like a grandmother figure"
I have been to a couple that were more specific and if they were scamming, they very coincidently got things right.
A few examples from ones I have been to of vagueness and more specificity:
One lady said to me (she used specific names but I have just used initials so as not to identify myself!) I have A here and she wants to say hello to M and D - my nanny was called A, father was the M and brother the D. The exact names but common names so I wasnt too convinced, she could have been guessing.
This same lady told my mother "I have P here and she is dancing around you saying she is 7 years older than you but still looks better". The P was a more unusual name and was the name of my mother's sister who was 7 years older and would have made such a comment!
Same lady told my friend the minute she walked in that she had her dad there and he was making comments about her mother A's leg. Friend was mid 20's so young to have lost parent, her mother was called A and had issues with her leg from diabetes - possibly a good guess??
She told another friend that she had a young boy called Christopher there and he was asking her to tell his mother that the new baby would be fine and was a girl. Her friend lost her 2 year old Christopher, was pregnant and worried about the new baby dying, it was a girl but she didnt know then.
Another was a group session, he called on my BIL to say he had a DM (gave first and middle name both of which were correct) there. He spoke about his funeral and a picture that was in the church in a specific room - turned out to be true. He described a photo that they had enlarged of his family and an incident on a boat that had happened. It was very specific and again quite coincidental if true.