Encryption won't stop the theft but it will stop a thief from watching those videos.
Odds are pretty good a stolen hard drive is not going to be recovered so backups are your insurance against loss.
As far as full disk encryption goes, here's something to think about:
https://security.stackexchange.com/questions/167442/data-encryption-risk-with-bad-sectors
For that reason, I use Veracrypt containers rather than full disk encryption and only for sensitive data, mostly of a financial concern.
Edited by JohnnyBeeGood, 25 September 2023 - 06:21 AM.