Now sometimes in certain price points it's not possible as the drywall was thrown up wonky and if you didn't texture it would show imperfections.

The floor is not super out of wack, more just some imperfections of chips and some hills, overall is it worth doing for what it's for?

Pace is a man and imperfect, however, he is helping so many people with the community he is building.

Also, would it be better to go for a darker color to hide any future imperfections, or does it matter?

A sprayer will need to be cleaned and you will likely use a brush and roller as well because the paint will not be the same everywhere.You will probably want to use flat on the ceilings to hide imperfections.

One thing that's burned into my mind while listening through the podcasts and reading is TAKE MASSIVE IMPERFECT ACTION! 

One thing you need to consider is that usually the popcorn ceilings or even troweled ceilings create a lot of dust plus it's an easy way for builders to hide imperfections and slam things through on cheap houses.If you scrape you might find a bunch of leveling problems and other things exposed that looks like crap unless it is coated and hidden in some way.The higher end homes here have the smooth ceilings just like the walls with heavy trim packages.

Imperfect biological machines with all the passions, desires, fears and destructive, irrational behaviors of animals we observe in the nature.

Just as a military order is invalid if it's unlawful or unconstitutional.That is not to say you won't get arrested or face a court martial.In the history of our country many sheriffs have disobeyed or didn't enforce laws they believed to be unconstitutional.Alas though our union is imperfect and in the quest for power politicians do pass and enact laws they know or should know won't pass constitutional muster.I heard a talk show host ask the Governor of New Jersey why he thought he had the power to make religious services unlawful.

They talk about "Progress, not Perfection" and "Massive Imperfect Action".