Sorta, kinda. All my pipe posts are on my Instagram account. So, unless IG goes away, they will be there along with Google backup for my account. Don't really actively save them on purpose.
Yes, I do have a bunch. I usually delete duds, duplicates and near duplicates while they are still on the iPhone, and then again when synched with the laptop.
On a side note for everyone, if they are of extreme importance, keep backups of the backup, in case of accidents, system failures, etc...
Like they say; ‘Don’t put all your eggs in one basket’. So don’t keep everything on one device. I personally have 3 Portable USB Hard Drives, with all the data the same on all of them as backups...