Yes ground turkey is much healthier for you and much better for you than ground beef is.
Ground Beef contains more fat than ground turkey does so that helps especially when you're losing weight or you want to keep your weight down.
Turkey is also considered to be more heart healthy as well while ground beef is considered not heart healthy and may increase your risk of heart disease, heart attacks, strokes, blood clots etc.
Ground Turkey doesn't contain as much fat content so that it does not clog your arteries as much so your chance of getting heart disease, heart attacks, blood clots, strokes etc are lessened when eating ground turkey instead of ground beef.
However sometimes even too much ground turkey can lead to health issues with your heart and other health.
So while ground turkey and even just plain turkey is not considered to be the healthiest of foods it's much better for your health to eat ground turkey than it is to eat ground beef.
But even ground beef is okay for your health in moderation but just don't overeat it and you'll be fine.