It was. I paraphrased it. 
I’m not entirely sure what you’re asking, but inxi output would indicate no swap was configured usually in this form:
Swap:
Alert: No swap data was found.
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This is something I’m seeing a lot of lately. I think Calamares needs some attention to … ahem … bring this to the attention of people doing a fresh installation.
I don’t think the default “click-through” option is ideal as it stands. It is causing issues.
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Just my 2 cents:
The kernel OOM killer mechanism will automatically attempt to free up memory by killing processes when the amount of physical memory is less than the amount of memory required to run all the desired processes. Almost all modern applications expect to be able to allocate and deallocate memory freely at run-time and tend to crash when this expectation is not met. So, having a swap partition or file is good for any user who is not able to ensure never running out of memory. This is most likely true for all beginners as you never know what type of application they are running. As soon as for example video editing tools are used easily all RAM is used even if 16 GiB are available. Disk space is cheap these days and e.g. with a conky showing your RAM and swap usage you will easily be able to detect that you are coming close to a point requiring the swap space, therefore implementing swap is from my point of view beneficial for most beginners.
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Maybe. I’m not sure why it seems so widespread; except in the case of choosing the install alongside partitioning method (if it’s offered) where the option for swap isn’t presented at all.
The presumption here is that Manjaro is being installed to the same disk as another OS; in this case I might guess that automatically creating swap (other than a swap file) might be difficult to factor in during installation.
Thoughts on this are welcome for clarity.
The swap option is offered when using the erase disk method, and naturally using the manual partitioning method one has to create a swap partition manually, or opt for a swap file post install.
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Can you turn swap on ? With swapon.
Yes, if swap actually exists and the syntax is correct;
For more information, please see:
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Here is the fstab line:
Use your own swap partition’s UUID;
you can find it using blkid:
sudo blkid
It should be the UUID associated with your swap partition.