The average of the polls prior to the election was PRECISELY correct, and the ACTUAL CNN consortium exit poll results were only off by a little bit.
Again you have to distinguish between the REPORTING ON THE POLLS and the ACTUAL POLLS themselves.
Scientific polls, be they prior to the election or exit polls, are uncannily accurate now. It’s virtually unheard of for the “polls to be wrong” except in very rare circumstances (a primary with 3+ candidates where voters are changing their opinion day to day, etc.)
Which is why elections have become so easily predictable.