He also left it to the humans and silurians to make a decision for themselves - only that time, he did not act like he couldn't care less and then vanish, leaving them with time ticking down to probably death.
Nobody is suggesting that he should have made the decision for them, but he didn't have to be an ass about it. I don't get why people want to ignore that part.
I didn't really think he was an ass about it to be honest.
He let the human race stand up and be counted, taking the "stabilizers off their bike" as The Doctor put it, then left for the duration of the decision making process.
He didn't act like the human race were "stupid apes" or "pudding brains", he acted like they were perfectly capable of making a decision that only they had the right to make.
He wasn't particularly gentle about it, but then again that just seems to be The Twelfth's particular way of doing things.
Remember in Day of the Doctor when he asked Clara what he should do about the future of his planet? Did she just say "well, not my world, guess I'll go hide in the TARDIS."
Yep, and she had as much right to pass judgement on the future of Gallifrey as he had a right to pass judgement on the future of the moon. I seem to remember all 3 Doctors being ready to activate The Moment and then Smith's Doctor being swayed by the way Clara was looking at him, rather than him actively consulting her first.
The majority isn't always right, in that case, the ends justified the means. It happened to be the right thing to do, and the Doctor trusted her to make it more than the rest of the human race, and she trusted the Doctor's opinion. Because basically, that's what she did, even though she made it, the idea came from him. So in all honesty, he really did cause that to happen indirectly.
It wasn't the right decision though.
Also, The Doctor left Clara, Courtney and the female astronaut to make the decision, not just Clara. Left them with enough time to decide what to do, which included consulting the rest of the human race. Clara then decided off her own back to risk hundreds, perhaps thousands of lives because she thought it was the right thing to do, and basically gave a big middle finger up to the opinion of the rest of her species.
The possible calamities that could have resulted in letting the moon hatch way outweighed the one certain death cause by bombing the creature inside it. With the information she had at hand, Clara risked a hell of a lot based on a possible perfect scenario that against all odds happened to transpire.
If anything it's quite an interesting turnaround, as it's the centuries old and demi-god like timelord who allowed the mere mortals to make their own decision , while a regular earthling decided to play god and put lives at risk based on her own blindly idealistic view.
Pretty ironic that she then has a rant at The Doctor for seemingly disassociating himself with a major day in the history of humanity, considering she had just decided that her opinion was more valid than all of humanity put together.