6C is still unplayable, haven't tried 6E, but changelog doesn't say anything about toning down the tantruming.
The way things work, you're a lot likely to get your first tantrum before you even have time to mine enough to make beds and a gym, and have 1 or 2 colonists killed. Taking in immigrants is almost a guaranteed death with parasites, even if you're lucky (since you have to hurry with beds/gym you can't make an infirmary right away), they're all in such a bad mood they'll rampage almost immediately if they don't have any amenities ready. And if you're done with all those, but didn't take extra immigrants, you'll get raided and since 75% of your population won't even fight even if they're in Security duty (4 vs 2 raiders and they all panicked as soon as the raiders got into the room and got slaughtered).
Not to mention that they give you enough time to make the airlock and air purifiers with only seconds to spare.
It's a complete exercise in frustration.
EDIT: Thinking about it, I managed to rush build the beds, gym and it got quite stable, and everybody who was rampaging turned out to be a gourmand eating replicator food. So 6E apparently tones that down quite a bit. I also managed to repel raiders by placing turrets in the main big rooms (the downside is that they have a tendency to blast holes in the hull).