Being druid, nor being a good character ... dont equal being a hippie. :-/
Even if Owlbear was a beast, it would make sence that Druid would fight it ... if there is one too big predator decimating everything else in the woods, its bad for "natural ballance" wich they maintain ...
Source:
https://www.dndbeyond.com/classes/druidFor druids, nature exists in a precarious balance. The four elements that make up a world—air, earth, fire, and water—must remain in equilibrium. If one element were to gain power over the others, the world could be destroyed, drawn into one of the elemental planes and broken apart into its component elements. Thus, druids oppose cults of Elemental Evil and others who promote one element to the exclusion of others.
Druids are also concerned with the delicate ecological balance that sustains plant and animal life, and the need for civilized folk to live in harmony with nature, not in opposition to it. Druids accept that which is cruel in nature, and they hate that which is unnatural, including aberrations (such as beholders and mind flayers) and undead (such as zombies and vampires). Druids sometimes lead raids against such creatures, especially when the monsters encroach on the druids’ territory.
Druids are often found guarding sacred sites or watching over regions of unspoiled nature. But when a significant danger arises, threatening nature’s balance or the lands they protect, druids take on a more active role in combating the threat, as adventurers.
Being a druid dont mean you cant harm any beast or plant ... it means you would not do that without purpose, that is all.
Why not have an option for a druid to befriend the owlbear and cub? Why not something like that? Maybe as a druid, I could convince the owlbear to let me remove the spear shaft and it is happy with me. Then, maybe allow me to somehow summon the owlbear for one battle with a magic item. Owlbear against the hag. Oh yeah!
I understanded completely, once again you simply create excuses to give bonuses to your own gameplay. -_-