Oh yes. People are going to admit to felonies to someone they don’t know on the telephone. You bet.
There are no consequences here. If the pollster is not law enforcement, then any information he reports is hearsay evidence and not admissible in court. If the pollster is law enforcement, the person could claim that they were lying to the pollster just to cause problems (no crime here) or the person could claim that they did not completely understand the question (no crime here). No DA in the world would do anything with this information.