This article is focused on reading them electrically.

I too have heard you can read flash storage with electron microscopes.

How is the hammer supposed to help me memorize the key?

do you mean github or do you actually mean git?

Well, those ones does it at the cost of size. In order to ensure separation they are comparatively huge.

Spotify seem to confuse breaking the TOS with breaking the law.

a HDD can fail at any given time. It could fail within a week of buying it, could last over a decade.

What I’m saying is, if you have data you don’t want to lose, yes you should be worried. Keeping backups is the only safe option.