Hamas seems to have developed a home-grown rocket manufacturing capability

That exactly tells you why it's so imprecise. Israel has weapons created by the world's top rocket scientists and the most precise manufacturing facilities, and for Hamas it's people who barely have couple hours of electricity per day putting something together in one of the most densely populated areas, full of rubble and destruction.

When I say they "target" military facilities, I mean that's what they aim for. Not that they have the high military capabilities to never miss.

Moreover, Hamas has, in recent days, specifically targeted Israeli civilians

I don't deny that there are individuals in Hamas who have targeted civilians or killed them needlessly. Hamas is a resistance militia and not a hive mind. Unfortunately, living your entire life in a concentration camp with limited food and electricity, watching families burning alive and buildings coming down may lead you to hate people who are rave dancing on the gates of your open air prison, or even the regular civilians. It is not rational, but it is bound to happen. And because of this, I blame Israel.

And I don't blame Israel to absolve Hamas of blame. Hamas leadership is complicit in ignoring civilian killing, I do not deny this. But blaming Hamas will drive no significant change. The root cause of these issues is Israel. At the very least, the civilian killings are usually individual actions, and Hamas' military campaigns target the military. Whereas for Israel, civilians are target, and Hamas is their tool to convince Israelis that bombing Gaza is good.