I half agree with you. It really boils down to what I want in a good EP, which is a mix of immersive game play and "single episode" game play. Seasons is an example. I can completely immerse my sim in the gardening aspect of Seasons, with a flourishing career as a florist, and an extensive, carefully planned garden that has something growing in every season, including some of the pack-exclusive flowers. If I don't feel like that, I could have my Sim focus their story on something else entirely, but break up the routine now and then with a bit of skating, or playing in the leaf piles.
Horse Ranch definitely has the immersive part. A horse isn't a pet, it's a lifestyle. If my sim is running a horse ranch that is a huge part of their life. But there isn't any good single episode game play. Even nectar-making, which is less involved that horse ranching, requires you to make space for bulky equipment and source ingredients. On the other hand, I bought this pack at 50% off, and, as a de facto game pack, I absolutely love it. Not all of my characters use this pack, but when they do, I really enjoy this different approach to the game.