Human population growth tapers off, even decreases, when a sufficiently advanced level of technology & luxury is reached.
We are hardly "reaching upper limits on agricultural and water availability". The problem with food is distribution, not production. Water is an issue, but desalination is very possible once the demand reaches sufficient levels.
And your "infantile religion" snipe is a non-sequitur.
The two most widely practiced religions in the world, Catholicism and Islam (~3 billion people) are both opposed to birth control. In most nations these institutions hold sway. So it is not a "swipe" nor a "non-sequitur".
We are hardly "reaching upper limits on agricultural and water availability". The problem with food is distribution, not production. Water is an issue, but desalination is very possible once the demand reaches sufficient levels.
And your "infantile religion" snipe is a non-sequitur.