The simple answer is yes and no... LOL
I know, not that simple, but follow along with me for a minute. It just completely depends on what your end goal is!
Let's say that your end goal is to lose weight. Chances are that your 10k steps will be more important. Why? Well there is this thing called NEAT. NEAT stands for non-exercise activity thermogenesis. This is basically just all of the things that we do on a daily basis that add up and burn calories. For example, typing, walking to the car, walking up steps, getting out of bed, etc. Any time you move, you can think of it as filling up your "NEAT cup". When your goal is to lose weight, ideally you will be eating less. This means that you will literally have less energy (food) coming into your body to use so you will probably be feeling more tired or lazy. At this time, making sure you are hitting 10k steps (or some other type of NEAT goal) will be an important thing to monitor.
If your goal is to maintain weight or build muscle, chances are you are eating more. You will be taking in more energy and therefore will be exerting more energy during the day. You may be more fidgety day to day or get a few extra workouts.
SO all in all, it can be something useful to track if you live a very sedentary lifestyle but it will not be the end-all be-all of your healthy lifestyle.