To me (and I don't mean this as disrespect to any breh in this thread
) this comes across as a coping mechanism to deal with the fact that they can't afford, can't justify or are unable to purchase bigger storage models.
If you've been on iPhone for any length of time, you're almost certainly running out of space because upgrading to a new phone means transferring data to a new device. That has the problem of building up over the span of multiple upgrades.
Personally, I still have images in my phone from my iPhone 7 plus. Currently sitting at 300 gbs used out of 512, meaning I literally cannot get the 256gb even if I wanted to.
iCloud is not a practical solution to this for many reasons that I don't really feel like getting into, but the main one is that I'd rather not have my images in the cloud in the event those servers eventually fail and my data is leaked, corrupted or deleted outright.