That's DANGEROUS advice, because iOS, being the toy OS it is, doesn't have reasonable ways to get back app data.
Yes, if you had iCloud for the app activated or another cloud storage things will be fine, but to blatantly say "be ruthless, there is no risk" is straight up irresponsible to say.
I agree. Also, different apps handle how they store data and where (and if it gets backed up). You might delete an app, reinstall it, and discover your data doesn't come back.
It seems some people have taken this iDevice is easy and just works rough-generalization a bit too far. You still have to be careful, do backups, etc.
Get proper data storage.
Hell, even if you're cheap you can wait for a Synology NAS for under 150USD and get reasonable wireless (to the computer) storage that sets you free from a lot of things, the least of which is the tiny iTunes library you must have.
And you CAN mix storage locations for iTunes, because Apple didn't touch a lot of its inner workings to dumb it down like the rest of their apps. ...
Except that you can't tell iTunes where to store that iDevice backup easily. You have to mess with the command line and symlinks. There are instructions out there... but it's not an average user kinda thing. It's got nothing to do with being cheap... it has to do with Apple's lack of foresight.
Typical iDevice storage being larger than the storage in the laptops and desktops where you presumably keep backups, is quite a legitimate complaint.
Although everyone should KNOW and REMEMBER their passwords for services they use.
Yes! I can't stress enough the importance of using a good password manager (PasswordWallet by Selznick, or 1Password, etc.) and NOT some half-baked browser or OS capability. Your passwords and other secure data are the keys to your digital life... DO NOT treat them as an afterthought, or carelessly!
My advice to those with Healthcare Data and want to restore it, do an encrypted iTunes backup. IOS 11 restores the Healthcare Data, terrific, if not iTumes will.
Well, or at least that way it will be there somewhere if you need to get it via a 3rd party app, as you might not want to restore everything else. Apple's current backup/restore is pretty basic, and boneheaded. Again, it's one of those things that you just have to slap your forehead and wonder how Apple can get away with such half-baked functionality.