You're uneducated on the topic and talking like you have all the facts. I have a large property that looks like the top image, and it's extremely low maintenance compared to a manicured lawn. I don't have to dead-head flowers, because they're incorporated into a larger planting, so it looks perfectly natural to have a few flowers in multiple stages of their lifecycle along side the rest of the property. NORMAL nature looks beautiful and not messy.
Sure, if you have a row of "native" flowers in a bed of mulch, they take maintenance. In that case, don't have a native lawn, you have a few native plants in an unnatural ecosystem.
Natives are easier, much lower maintenance, better for the environment, and look much better unless you're used to flat, green, golf courses.