No one but Apple can answer the question you've asked.
That should be the end of this thread right there, but based on this thread and your other thread about a way to close all recently used apps at once, if what you're seeking is useful advice, mine would be:
Stop micro-managing your Watch. Enjoy it for what it is, stop making it something you feel the need to regularly monitor and baby. Remove the battery percentage complication, stop yourself when you feel the urge to check the battery life or usage hours, stop removing recently used apps. It's just a Watch. It's supposed to make things easier and more fun, not give you work to do.