These are incredible for hiking, hunting, etc

One alone won’t be able to do much but if you need to connect a few people in a rural area it’s amazing.

My only hope is that waterproof models become more available

If OP is attempting a 3-2-1 Backup scheme, this is an irrelevant argument.

OP wants to store a backup in a different physical location while trusting that it won’t be used to train AI. They are looking for services that can satisfy that.

The answer to your question is yes