Only a few people nowadays use the Morse Code - mainly the military - so there would be little chance of anyone else knowing what the bears' secret messages were about. The bears went away to practice amongst themselves and declared that they were very pleased to now have lots of other ways of passing on their secret messages to each other.
Maybe you could try using Morse Code for your secret messages too. You may even be able to memorise some of the letters so you don't spend ages having to look them up each time. Working out your name in Morse Code is a good start. By the way, the sentence which Scary did earlier translated as "Messages In Morse Code Are Secret."