Didn't stop him from trying to kill you and all of this is almost entirely from a out of universe perspective with no regard at all to the setting and it's history. The whole thing of you're only alive because main character is entirely divorced from the context of the story, or do you seriously think the good characters of Reborn would suddenly not try to intervene when they did before just because the person about to killed in front of them isn't "special." Heck realistically a person's ability to train pokemon is due solely to their ability and compassion for their pets, not some special main character status and you're forgetting said weapons are not tools but living creatures. To be blunt you killing grunts right and left does nothing to improve your chances of survival or taking them down, by doing so all you've changed is the reluctant grunts are now fully motivated as they try to avenge their friends, just another cog in this vicious cycle.
By this logic you shouldn't even try the non lethal solution at all because you're not special, well guess what? Cops don't have that special main character status in real life and the conditions they are called into are not always ideal but they are expected to disarm the criminal, with lethal intent being a last resort and is heavily scrutinized. Not even trying under that reasoning is not logical, its moral cowardice and in that case seriously why are you even playing at being a vigilante in this scenario? If the risks of your own death are indeed far too big for you and you already survived one attack, why bother personally chasing Meteor down to their base? This reasoning also isn't why Titania kills the grunts, heck she is fully honest about how they weren't really a threat to her.