What's with the fluffier episodes?

For a great majority of the Young Indy series, the episodes are adventurous, funny, and deeply thematic, yet there are some episodes that feel heavily out of place with the show's overall tone. The ones that I'm referring to specifically are Espionage Escapades, Scandal of 1920, Mystery of the Blues, and Hollywood Follies. As funny and entertaining as they were, those episodes were too lighthearted, soft, colorful, and fluffy that they felt like they weren't Indiana Jones films and I don't know why Lucas made them. The last three did nothing to show Indy changing any further as a man or about how he became an archeologist, they were full of too much irrelevant stories about music and movies. When I have to juxtapose those episodes with the darker serious episodes like Trenches of Hell, Oganga, and Masks of Evil and the action-packed adventures like Daredevils of the Desert and Attack of the Hawkmen, the fluffier episodes lack the elements that made the show adventurous, dark, and exciting and that defined the character of Indiana Jones. These episodes were full of too much ridicule, embarrassing situations, and fluffy explorations of music and movies than about war, life and death struggles, and heroism that had a much more significant effect on his life.